Matthew 11:27

All things are delivered to me by my Father; and no one knoweth the Son but the Father; neither knoweth any one the Father, save the Son, and he to whomsoever the Son is pleased to reveal him.

John 17:3

And this is life eternal, to know thee, the only true God, and Jesus Christ, whom thou hast sent.

1 John 5:20

But we know that the Son of God is come; and he hath given us an understanding that we may know the true one; and we are in the true one, even in his Son Jesus Christ; this is the true God and eternal life.

Treasury of Scripture Knowledge

Summary

The fear of the LORD is the beginning of wisdom: and the knowledge of the holy is understanding.

Bible References

The knowledge

Matthew 11:27
All things are delivered to me by my Father; and no one knoweth the Son but the Father; neither knoweth any one the Father, save the Son, and he to whomsoever the Son is pleased to reveal him.
John 17:3
And this is life eternal, to know thee, the only true God, and Jesus Christ, whom thou hast sent.
1 John 5:20
But we know that the Son of God is come; and he hath given us an understanding that we may know the true one; and we are in the true one, even in his Son Jesus Christ; this is the true God and eternal life.