And this is life eternal, that they might know thee the only true God, and Jesus Christ, whom thou hast sent.
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John 17:1-5
Tyndale Open Study Notes (CC BY-SA 4.0).
17:3 to know you: The Hebrew idea of knowing encompassed experience and intimacy, which for Christians means love for God and obedience to him. • sent to earth: Jesus originated in heaven and was returning there (17:5), so he exercises divine authority as the agent of God.
Other Bible passages linked to this one, most cited first.
And we know that the Son of God is come, and hath given us an understanding, that we may know him that is true, and we are in him that is true, even in his Son Jesus Christ. This is the true God, and eternal life.
And this is the record, that God hath given to us eternal life, and this life is in his Son. He that hath the Son hath life; and he that hath not the Son of God hath not life.
For God sent not his Son into the world to condemn the world; but that the world through him might be saved.
Thus saith the LORD, Let not the wise man glory in his wisdom, neither let the mighty man glory in his might, let not the rich man glory in his riches: But let him that glorieth glory in this, that he understandeth and knoweth me, that I am the LORD which exercise lovingkindness, judgment, and righteousness, in the earth: for in these things I delight, saith the LORD.
O righteous Father, the world hath not known thee: but I have known thee, and these have known that thou hast sent me.
Then shall we know, if we follow on to know the LORD: his going forth is prepared as the morning; and he shall come unto us as the rain, as the latter and former rain unto the earth.
Authorship: the book itself or Christian tradition. Approximate dates, as in Carson and Moo, An Introduction to the New Testament, and Longman and Dillard, An Introduction to the Old Testament.