The Holy Bible says,

The apostle Paul, preached the gospel of God free of charge.
(2 Corinthians 11:7).

Paul stated "Unlike so many we do not peddle the word of God for profit."

(2 Corinthians 2:17).

Men...who think that godliness is a means of financial gain.
(1 Timothy 6:5).

You (priests) distort all that is right;...priests teach for a price,...
(Micah 3:9-11).

Who has ever given to God, that God should repay him? (Romans 12:35).

God wants you to be; not greedy for money but eager to serve;... (1 Peter 5:2).

Jesus said,

"Go preach,

Freely you have received,

Freely give." (Matthew 10:7-8).