On the first day of each week, you should each put aside a portion of the money you have earned.
1 Corinthians 16:2

Bring all the tithes into the storehouse so there will be enough food in my Temple. If you do,” says the Lord of Heaven’s Armies, “I will open the windows of heaven for you. I will pour out a blessing so great you won’t have enough room to take it in! Try it! Put me to the test!
Malachi 3:10