Galatians 1:11

But I make known to you, brethren, that the gospel which is preached by me, is not according to man:

1 Corinthians 2:9-10

But, as it is written: Eye has not seen, and ear has not heard, and into the heart of man have not entered the things which God has prepared for them that love him.

1 Corinthians 11:23

For I received from the Lord that which I also delivered to you: That the Lord Jesus, on the night in which he was delivered up, took bread;

Romans 2:16

who show that the work which the law requires, is written in their hearts, their conscience bearing testimony, and their reasonings with each other accusing, or making excuse.

1 Corinthians 15:1-3

But I make known to you, brethren, the gospel that I preached to you, which also you received, in which also you stand,

Galatians 1:1

PAUL, an apostle, (not from men, nor by man, but by Jesus Christ, and God the Father, who raised him from the dead,)

Ephesians 3:3-8

that by revelation was made known to me the mystery, (as I briefly wrote above,

Treasury of Scripture Knowledge

Summary

But I certify you, brethren, that the gospel which was preached of me is not after man.

Bible References

That

Galatians 1:1
PAUL, an apostle, (not from men, nor by man, but by Jesus Christ, and God the Father, who raised him from the dead,)
1 Corinthians 2:9
But, as it is written: Eye has not seen, and ear has not heard, and into the heart of man have not entered the things which God has prepared for them that love him.
1 Corinthians 11:23
For I received from the Lord that which I also delivered to you: That the Lord Jesus, on the night in which he was delivered up, took bread;
1 Corinthians 15:1
But I make known to you, brethren, the gospel that I preached to you, which also you received, in which also you stand,
Ephesians 3:3
that by revelation was made known to me the mystery, (as I briefly wrote above,