Malachi 3:10

"Bring the whole tithe into the storehouse, so that there may be 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 a blessing until it overflows."

1 Corinthians 9:13-14

Do you not know that those who perform sacred services eat the food of the temple, and those who attend regularly to the altar have their share from the altar? So also the Lord directed those who proclaim the gospel to get their living from the gospel.