Mark 7:17

“And when he was entered into the house, etc..] Very probably at Capernaum, and it may be the house of Simon and Andrew, where he used to be when there: from the people; being separated from them, having dismissed and left them, when he and his disciples were by themselves alone: his disciples asked him concerning the parable; that saying of his to the people, which was somewhat dark and intricate to them; that nothing without a man going into him defiled him, but what comes out of him: this was asked by Peter, in the name of the rest; (see Gill on “<401515>Matthew 15:15”).”

“See this passage explained in the notes at Matthew 15:1-20. Mark 7:1 Came from Jerusalem - Probably to observe his conduct, and to find matter of accusation against him. Mark 7:2 Defiled hands - The hands were considered defiled or polluted unless they were washed previous to every meal. Mark 7:3 Except they wash their hands oft - Our word “oft” means frequently, often. The Greek wore translated oft has been rendered various ways. Some have said that it means “up to the wrist” - unless they wash their hands up to the wrist. Others have said up to the elbow.” There is evidence that the Pharisees had some such foolish rule as this about washing, and it is likely that they practiced it…”

“Mar 4:10, Mar 4:34; Mat 13:10, Mat 13:36, Mat 15:15 Mark 7:18”