Tithing is a big part of being a Christian.
Malachi 3:11–12 Amp
10 Bring all the tithes (the tenth) into the [a]storehouse, so that there may be [b]food in My house, and test Me now in this,” says the Lord of hosts, “if I will not open for you the windows of heaven and pour out for you [so great] a blessing until there is no more room to receive it. 11 Then I will rebuke the [c]devourer (insects, plague) for your sake and he will not destroy the fruits of the ground, nor will your vine in the field drop its grapes [before harvest],” says the Lord of hosts. 12 “All nations shall call you happy and blessed, for you shall be a land of delight,” says the Lord of hosts.