Is kit correct that all religions took their birth or given birth by God Himself?

No, only the true religion!

The Bible shows that all the many forms of false religion are part of "Babylon the Great" (Revelation 17:5) That name calls to mind the ancient city of Babylon, where false religion started up after the Flood of Noah's day. Many teachings and practices now common in false religion originated long ago in Babylon. For example, the Babylonians worshiped trinities, or triads, of gods. Today, the central doctrine of many religions is the Trinity, But the Bible clearly teaches that there is only one true God, Jehovah, and that Jesus Christ is his Son. (John 17:3) The Babylonians also believed that humans have an immortal soul that survives the body after death and can suffer in a place of torment. Today, belief in the immortal soul or spirit that cans suffer in hellfire is taught by most religions.

All religions were invented by Man. God or gods do not exist.

Mormonism and Scientology being among the more recent inventions.

Kit is not correct at all. Kit once said that you can eat rocks if you put chutney on them but we know what happened next.

I have studied many of them, and there appears to be a similar root in them. God is the author of love, and love is an important theme in them.

Yes. One should have enough confidence in "kit" to face the Truth.

Religions and gods were created by mankind, they are the produce of human imagination, aspirations, fears and expectations.

Part of the brain that asks a question about God is, in all probability, not the part of the brain that can receive the answer.

Which god?