Here Christ addresses that true defilement is found in the heart not in the foods we eat. Because He has cleansed all things for eating so we are not bound by the law.
This is a very true statement even though I strongly push the Levitical law when it comes to diet. Not because I still keep the law but because its principles still hold true today. God has given us passage after passage to use to increase the quality of our lives we just need to dig deep into the word so we can unlock these profound truths.
Use these scriptures in your prayer and fasting time this week.