A brief look from Chuch History: No tithing

Earliest Christian history clearly proves that there were “no tithing” rule practised by the church as done in comparison by the Jews.

Irenaeus, A.D. 183 – 186 writes:

The Lord … instead of the law enjoining the giving of tithes, [told us] to share all our possessions with the poor. (Against Heresies IV:13:3)

… oblations [i.e., offerings] in general have not been set aside. There were oblations there [among the jews], and there are oblations here [among the Christians]. There were sacrifices among the people; there are sacrifices, too, in the Church. Only the type has been changed. This is because the offering is now made, not by slaves, but by freemen.
The Lord is one and the same, but the character of a servant’s offering is unique, as is that of freemen. This is so that, by the very offerings, the freedom may be indicated and displayed. With God nothing is purposeless, nor without significance, nor without design.
For this reason, they did have the tithes of their goods consecrated to him, but those who have received liberty set aside all their possessions for the Lord’s purposes, giving joyfully and freely–and not only from the less valuable portions of their property, since they have the hope of better things. They are like that poor widow who cast all her living into the treasury of God. (Against Heresies IV:18:2)

Conclusion:

If want to give, give willingly not claiming it as an obedience of a tithing rule which has been nullified (non-existent) under the New Covenant/New Testament.

Don’t be deceived.