Matthew 11:27

All things have been entrusted to me by my Father, and no one but the Father perfectly knows the Son, and no one but the Son perfectly knows the Father, and the one to whom the Son chooses to make Him known.

John 17:3

Now eternal life means knowing you as the only true God and knowing Jesus your messenger as Christ.

1 John 5:20

And we know that the Son of God has come, and has given us insight to recognize the True One; and we are in union with the True One through His Son, Jesus Christ. He 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 have been entrusted to me by my Father, and no one but the Father perfectly knows the Son, and no one but the Son perfectly knows the Father, and the one to whom the Son chooses to make Him known.
John 17:3
Now eternal life means knowing you as the only true God and knowing Jesus your messenger as Christ.
1 John 5:20
And we know that the Son of God has come, and has given us insight to recognize the True One; and we are in union with the True One through His Son, Jesus Christ. He is the true God and eternal life.