For who makes you differ from another? And what do you have that you did not receive? Now if you did indeed receive it, why do you boast as if you had not received it?
1 Corinthians 4:7
Could you imagine Jesus copyrighting the sermon on the mount or Paul demanding royalties for the reproduction of the epistles? Paul clearly understood that he could not take credit for the things God was doing through his life.
Heal the sick, cleanse the lepers, and cast out demons. Freely you received, so freely give.
Matthew 10:8