I want you to know, brothers and sisters, that the gospel I preached is not of human origin.
NIV
For I want you to know, brethren, that the Gospel which was proclaimed and made known by me is not man's gospel [a human invention, according to or patterned after any human standard].
AMP
But I certify you, brethren, that the gospel which was preached of me is not after man.
KJV
