1 Corinthians 9:13-15

9:13 Don’t you know that those who serve in the temple eat food from the temple, and those who serve at the altar receive a part of the offerings? 9:14 In the same way the Lord commanded those who proclaim the gospel to receive their living by the gospel. 9:15 But I have not used any of these rights. And I am not writing these things so that something will be done for me. In fact, it would be better for me to die than – no one will deprive me of my reason for boasting!