Jesus is not just a guest but the Messiah, the King of Kings. Naturally, they should invite and serve Jesus, and He should rule over them. Jesus is the King, and that's why He speaks about the problem of sin in order to rule over them and bring them from the kingdom of the devil into the kingdom of God. He points out the reality of the Pharisees, saying that while they pretend to be clean on the outside, they are actually dirty on the inside. It means that, in God's eyes, they are unclean.
The outside of the cup refers to the outward traditions and rituals, while the inside refers to the Word. They act clean on the outside, but inside, they lack the Word. These people have dark hearts, not seeking the Word but looking for signs. They do not receive what God gives but pursue what they desire. If you hear the Word but do not act on it, you naturally become wicked.
"But give that which is within as charity, and then all things are clean for you." Jesus is telling them to give what is inside in charity. With a heart cleansed by the Word, they should help the weak. It means to help others with a heart that obeys God and is shaped by the Word.
Excerpt from the sermon by Pastor Lee, Sep 13, 2024.
Luke 11:37-42