Ok...plain and simple. If you hold back a part like annanias and saphira...you are practicing being the world (sin in the flesh). If you have been born again and given a measure of faith (a measure of God), and have access to the holiest of all...tithing is keeping 90%, and if you do so you are confused about what being a member of the high priesthood is all about. The high priesthood does not tithe to itself...they have all things common or are taking steps towards proving the scincerity of their love like Paul admonished us to do. Tithe is an everlasting covenant, but those with inheritance in the land (the world) tithe to the priesthood.
Numbers 18:19-21New King James Version (NKJV)
19*“All the heave offerings of the holy things, which the children of Israel offer to the Lord, I have given to you and your sons and daughters with you as an ordinance forever; it is a covenant of salt forever before the Lord with you and your descendants with you.”
20*Then the Lord said to Aaron: “You shall have no inheritance in their land, nor shall you have any portion among them; I am your portion and your inheritance among the children of Israel.
Tithes for Support of the Levites
21*“Behold, I have given the children of Levi all the tithes in Israel as an inheritance in return for the work which they perform, the work of the tabernacle of meeting.
2 Corinthians 8:7-9King James Version (KJV)
7*Therefore, as ye abound in every thing, in faith, and utterance, and knowledge, and in all diligence, and in your love to us, see that ye abound in this grace also.
8*I speak not by commandment, but by occasion of the forwardness of others, and to prove the sincerity of your love.
9*For ye know the grace of our Lord Jesus Christ, that, though he was rich, yet for your sakes he became poor, that ye through his poverty might be rich.
We see in the following verse a Levite who is also showing the new way in Christ.
Acts 4:36-37King James Version (KJV)
36*And Joses, who by the apostles was surnamed Barnabas, (which is, being interpreted, The son of consolation,) a Levite, and of the country of Cyprus,
37*Having land, sold it, and brought the money, and laid it at the apostles' feet.