How do Jehovah's Witnesses understand Galatians 1:11-12? The Apostle Paul stated at Galatians 1:11-12 the following:

Galatians 1:11-12: For I would have you know, brethern, that the gospel which was preached by me is not according to man. For I neither received it from man, nor was I taught it, but I received it through a revelation of Jesus Christ.

Also, Galatians 1:1:

Paul an apostle  (not sent from men, nor through the agency of man, but through Jesus Christ, and God the Father, who raised Him from the dead.

Then there is one more verse declaring the gospel of Jesus Christ at Mark 1:1:

The beginning of the gospel of Jesus Christ, the Son of God.

So Paul is informing us that the origin of the gospel he shared with them/the Galatians went back directly to a revelation of Jesus Christ Himself. It is the book of Acts that records what happened to Paul at Acts 9:3-19.
So the question is how Jehovah's Witnesses, who teach that Jesus Christ was only a human man and not God, reconcile the Apostle Paul saying he did not receive the gospel from any man nor did any man teach him the
gospel?
Jehovah's Witnesses believe that Jesus was a man during his time on earth, but not just any ordinary man. He was the Christ, he was God's Son, and he was perfect. What Jesus taught was not of his own originality but was from God, his Father. (John 8:28; John 14:10)
Before Jesus came to earth and after he was resurrected, he was a mighty spirit creature. The Apostle Paul received his gospel after Jesus was resurrected, so Jesus was no longer a man then.

1 Peter 3:18 (NWT)
For Christ died once for all time for sins, a righteous person for unrighteous ones, in order to lead you to God. He was put to death in the flesh but made alive in the spirit.


Acts 13:34 (NWT)
And the fact that He resurrected him from the dead never again to return to corruption, He has stated in this way: ‘I will give you the expressions of loyal love promised to David, which are faithful.’


1 Corinthians 15:45 (NWT)
So it is written: “The first man Adam became a living person.” The last Adam became a life-giving spirit.


2 Corinthians 5:16 (NWT)
So from now on we know no man from a fleshly viewpoint. Even if we once knew Christ according to the flesh, we certainly no longer know him in that way.

Sources:
jw.org &gt; Bible Questions Answered &gt; After Jesus’ Resurrection, Was His Body Flesh or Spirit?
What Can the Bible Teach Us? &gt; Chapter 4: &quot;Who Is Jesus Christ?&quot;