"Do you not yet understand that whatever enters the mouth goes into the stomach and is eliminated? But those things which proceed out of the mouth come from the heart, and they defile a man. For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies. These are the things which defile a man, but to eat with unwashed hands does not defile a man.” (vv.16-20)
Here in chapter 15 Jesus is teaching on matters of the heart. While doing so He completely disregards some oral Jewish traditions, infuriating the Scribes and Pharisees who stand more on tradition than scripture. Jesus is teaching that, it is more important to wash your heart than your hands. Why? “Because the heart is deceitful above all things, and desperately wicked” (Jeremiah 17:9).
The solution to defilement then is to cleans the heart not the hands. As King David wrote in the Psalms we should, "hide God’s word in our hearts, that we might not sin against Him” (Psalm 119:11). How is defilement avoided? By God’s Word, purifying our hearts, certainly not by ceremonially washing our hands.
May we be more concerned with what goes into our hearts and eventually comes out of our mouths, and stand on scripture rather than tradition.
The Truth: “Blessed is the man who walks not in the counsel of the ungodly, nor stands in the path of sinners, nor sits in the seat of the scornful; but his delight is in the law of the Lord, and in His law he meditates day and night.” (Psalm 1:1-2)