Are you accusing Jesus of disobeying Himself by not washing His hands before eating? If there was a command from heaven that one must wash his hands before eating, it would have come from Jesus.
Jesus is the member of the God family that created everything. John 1:3,10 ; Eph 3:9 ; Col 1:16.
John 1:18 states that no man has seen God (the Father) at any time (not Abraham nor Moses). The Son hath declared Him.
John 17:26 Jesus said about His Father "And I have declared (Gnorizo--made known) Him.
Jesus, in stunning clarity, in John 5:37 states that no one has heard the Father's voice at any time.
Again, in John 6:46 Jesus makes it clear that no man had ever seen the Father.
In Exodus 24:9-11 seventy elders of Israel saw God (Jesus).
In Exodus 33:18-23 Moses was allowed to see the backside of God (Jesus) in all His glory.
There are numerous instances in the OO in which men have either seen God or heard Him speak, but it wasn't the Father. It was Jesus.
In Exodus 13:21-22 we see that God went before the Israelites in a cloud.
Now read 1Cor.10:1-4. Jesus was the member of the God family who was in the cloud.
When Moses asked God (Ex. 3:14) how to answer the Israelites when they asked who had sent him Jesus answered him "l AM that I AM. I AM has sent me."
When confronted by the Pharisees in John 8:52-59 they said that He was not yet 50 years old, so how could He possibly know Abraham.
He answered..."before Abraham was, I AM." They tried to stone Him because they understood what this implied.
When the guards came to arrest Jesus in John 18:1-6, He asked them whom they were seeking. They replied Jesus of Nazareth. When Jesus answered "I AM," (He is in italics. It was added by the translators) they went backwards and fell to the ground.
Jesus referred to Himself as I AM:
The bread of light;
The light of the world;
The door;
Good shepherd;
The way, truth, and the light;
Etc.....
In the OT God referred to Himself the same way.
In John 20:2 Thomas on seeing Jesus' scars cried out, "my Lord and my God."
The first "face to face" contact that we will have with the Father is after the Great White Throne Judgement.
Mark 7 is simply a tradition of the Pharisees involving not only hands but pots, cups, tables, and brasen vessels. It was a ritualistic washing.
In verses 7-8, Jesus condemns them for their tradition, which He calls "tradition of men."
When Jesus declared some animals unfit for human consumption, He didn't make a mistake that He have to later correct.