I don't see how a few comments in passing constitute "very important". I also don't see how said comments, from the middle of Jesus' rebuke of the Pharisees, can be taken as directive for Christians. Context is
always important!
2 Timothy 4:3 King James Version (KJV)
3 For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears;
You statements demonstrate why, apparently, you don't understand anything you are reading in Scripture. You are seeing what you want to see. You don't want to Tithe, that's why, apparently, you see Tithing as irrelevant.
What we have learnt concerning Scripture:
1) Every Word, Law, Command and Doctrine from Genesis to Revelation is absolutely crucial.
2) Every Word that Yeshua/Jesus utters is with Great Veracity and Purpose.
3) Yeshua Messiah/Jesus Christ in all things he speaks and does teaches to be a Follower of Christ. He is teaching the Scribes and Pharisees to be a Follower of Christ.