The first thing we need to do is study the definitions or Ramez of the main pieces talked about in the parable so we may decipher the riddle. Just as Messiah gives us definitions for parables to figure out what the two witnesses mean(the literal story and the Spiritual Story). So we also must study the spiritual counterpart of the key words in this Parable.

They are:
Bread = Word of God
Eat = Study
Hands = Spirit of Actions
Wash = to Sanctify or be made clean/acceptable to God

Now you will need to do a study on each one of these words yourself to come to these conclusions, this means taking a look at all scriptures and the use of these words, Some Scriptures will come right out and say this = that, while others will imply it. One of the great ways to do this is to use a program like esword( a free bible software program at www.e-sword.net) You then type in a word and it will pull up every use of this word in the scriptures. You then read the context of every use, looking for a definition or comparison. Sometimes there is no direct comparison of the word and you must test your understanding of it by going back and plugging in the alternate meaning in each verse to see if it makes sense. As you understand the Ramez more and have more definitions it's easier to get your Ramez right because you'll have more of the pieces of the riddle. Let's move on.

The Pharisees accuse Messiah's students of not washing their hands when they eat bread. Let's plug in what the ramez is saying. We will quickly see that because they do not see as messiah says (spiritually) they are blind though they see things literally or in the flesh. This is also why they did not recognize Messiah because he came not just teaching the Flesh as the Written Torah does first, but he came teaching the spirit of Torah which is the goal of Torah to change your spirit because no Flesh shall inherit the kingdom. it is our Spirit that dwells with God. So they didn't really even understand what they were saying to Messiah when saying:

Mat 15:2 Why do thy disciples..transgress..the..tradition of the elders?.....for they wash not their hands
..........Why do your followers......break.......the..literal teachings of men?...for they clean not their spirit

when they....eat.............bread.
when they..study..the word of God.

They didn't realize they were accusing his disciples of the sin they were doing, as it says the same measure you measure will be measured back to you. It was a witness against the way they study the Word of God. Yet because they only see literally not spiritually their sin remained with them and they were blind not knowing it.

Messiah then replies why do you break the spirit of the Torah by the way you keep the literal Torah. Thus dividing the spirit from the flesh and making the person dead.

Mat 15:3 But he answered and said unto them, Why do ye also...transgress the commandment of God
.............But he answered and said unto them, Why do ye also......Break..................Spirit of Torah

.............by your tradition?
the way you keep the Letter of Torah.

Mar 7:9 And he said unto them, Full well...ye reject........the commandment of God,
.............And he said unto them, Full well..you reject...Messiah teaching Spirit of Torah

........that ye may keep your own tradition.
that you may preserve your literal understanding.

Here they reject Messiah because they love the flesh and the authority they have over their flesh but do not yield their spirit to God. They fear him in the flesh and so kill him because they want to rule over the literal Torah and didn't realize those who cling to the flesh shall pass away with the flesh but those who cling to the Spirit of God (Messiah) shall never die.

This is restated in the next part as he brings up honoring your Father and Mother.

Mat 15:4 For God commanded, saying, Honour........................thy father and mother:
For God commanded, saying,Honor Those who God puts in authority over you to teach you his ways.

and, He that........curseth......................................................father or mother,
........He who..brings evil upon.....Those who God puts in authority over you to teach you his ways.

Let him die the death.
Let him die the death.

It then goes into those who dedicate all they have to the Temple to receive the glory of Men and supposed treasures in Heaven, that then will not take care of their Father and Mother when they are in need saying my stuff is dedicated already.

This paint a great picture also of the pharisees boasting in what they do for God and the service of the temple and such, yet they reject Messiah while claiming to honor God by keeping the literal Torah, not having the spirit of Torah or even recognizing it when Messiah comes. In many ways they missed that a repentant heart and humble spirit is an offering acceptable to YHWH not the literal blood of bulls and goats without the spirit of repentance.

Psa 51:17 The sacrifices of God are a broken spirit: a broken and a contrite heart, O God, thou wilt not despise.

Therefore they are no help to the Messiah who is put in authority over them as the head is in authority over the body. They in keeping the literal Torah without keeping the spirit of Torah are no help to Messiah who came teaching the goal of the letter is a changed spirit, a spirit of love, and the spirit of God.

Mar 7:12 And ye suffer him no more to do ought for his father or his mother;

Mat 15:8 This people.....................draweth nigh unto me
..............This People........draws near(corban meaning offerings)

..........................with their mouth,
with their flesh(literal Torah and the sacrifice system)

and honoureth me with.........their lips;...but their.....heart....................................is far from me.
.....Honoring...me with..........words......but their.....spirit....is far from me (being Earthly not Heavenly).

Mat 15:9 But in.............vain................they do worship..........me,.......teaching for........doctrines
...............But in...emptiness of Spirit...do they worship.......the Torah.....Teaching......understandings

.....the commandments of men.
that are only literal (Flesh not Spirit)

Interesting he says their teaching is in Vain(empty) like the golden calf Idolatry is worshipping something earthly that has no spirit. This is essential to understanding what Messiah was teaching (spiritual Torah) the second witness to literal torah. This also shows the problem of Followers since the beginning, worshipping the things of the Earth, the flesh and the work of Men. What is also interesting is he refers to the Torah as himself when he says to the Pharisees who didn't worship him but the Written Torah that they were worshipping him in Vain. Because he is the True Torah (letter and Spirit).

Mat 15:10 And he called the multitude, and said unto them,...Hear,..................and understand:
......And he called the multitude, and said unto them,...Let your Flesh..be Established in both witnesses

This is part of the ramez understanding of ears that hear(the people who hear the literal Torah, and eyes that see, those who spiritually see the unseen Spirit of Torah). He is telling those who are hearing him even if you only keep the literal Torah at least be consistent to the letter of Torah your violating.

Mar 7:14 And when he had....called all the people unto him,...he said unto them,
...............And When he had ...............gathering of all Israel in Millenium

Hearken unto me every one of you, ...........and understand:
Keep the literal Torah of God...........and be established in Spirit also

This is a great picture and prophecy of the Gathering of Israel when Messiah returns and it says he shall then Write the Law (Torah) on our inward parts(spirit).

Mat 15:12 Then came his disciples,...and said unto him,........Knowest thou......that the Pharisees were
.................Then came his followers, and said unto him,..........See the spirit............of the pharisees

...........offended,..................after they heard this saying?
..they were guilty of sin...........after hearing you speak.

He says if your hand offends the cut it off, This is to say if your spirit is full of sin cut off the sin so you may enter into the kingdom. This is why them being offended is them being full of sin or guilty of sin. Also to point out that Knowledge, or to Know is drawing close, much like the phrase to know your wife is a drawing close in a way to see what is beyond the surface. I will expound on this understanding in another thread.

Mat 15:13 But he answered and said,....Every.......plant,.....which my heavenly Father hath not planted
.................But he answered and said,....Every...spirit of man..........that is without the Spirit of God

......shall be rooted up.
cut off at time of Harvest.

Mat 15:14 Let them alone: they be..........................blind leaders of
...................Leave alone................Leaders who don't see the spirit of Torah Leading

..........................the blind.
those who also don't see the spirit of Torah

And if............................the blind..........................................................lead the blind,
And if.....Those who teach only the literal torah.......lead those who also only see the Literal Torah,

both shall fall into the ditch.
Both will be left dead in the earth.

Mat 15:15 Then answered Kefa (Peter) and said unto him,......Declare unto us................this parable.
....................................................................Tell us the Ramez or Spiritual Definitions of.....this riddle.

Mat 15:16 And Yahushua said,..Are ye also yet..........................without understanding?
................And Yahushua said....are you also..blind to not see the two witnesses of this piece of Torah.

Mat 15:17 Do not ye yet understand,.........that whatsoever entereth in at the mouth goeth into the belly
....Do you not see the Spiritual model and Flesh.........what ever goes into the flesh enters physically

and is cast out into the draught?
and what is not good is cast out

Mat 15:18 But those things which................proceed out of..................the mouth........come forth from
.........But those things which you...send out into the world through....your flesh.....come from and show

the heart;......and they defile the man.
your spirit....and that is what is judged.

Mat 15:19 For out of the heart...proceed...evil thoughts,..............................murders,
...................For out of the Spirit.....goes......evil thoughts,...anger against your brother without cause,

.............adulteries,....................fornications,
Joining yourselves to Evil,..........Perversion,

................thefts,..........................................false witness,..................................blasphemies:
Taking what is not yours,.......Lies not being established by 2 witnesses................Unholiness.

Mat 15:20 These are the things which.........................defile a man:
...................These are the things which.......make a man unacceptable to God

.............but to eat with unwashen hands defileth not a man.
To eat with unwashed hands literally does not make you unacceptable.

Now reread the entire scriptures in the Peshat (literal) then go back and reread the entire text of the Ramez. To close this teaching I would say my take on this parable is that We should strive as he says to clean the inside of the cup (the Spirit) gaining the spirit of love, not getting caught up in the flesh and open our eyes to see the spiritual teachings of Torah, Only then may we wash our Spiritual hands and sit and eat with our Messiah and with God. Shalom!