John 8:58 (update)

The Person of Christ: His Underived Eternal Sonship
The words of the Lord in John chapter 8:58 could not be clearer: “Verily, verily, I say unto you, Before Abraham was, I am.” Note that it proves conclusively that our Lord Jesus Christ is the eternal Son. Repeatedly in this chapter He has been speaking of God as “My Father.” Now this climactic statement of the chapter shows that this is eternally so. If there was a time when He came into being, He would have said, “Before Abraham was, I was.” The verbs translated “was” and “am” are not the same, and they show that the meaning of the statement is “Before Abraham came to be, I exist.” His use of “I am,” which would make the statement ungrammatical under normal usage, shows that He never came into being. Moreover, His use of “I am” immediately reminds us that this is what God called Himself when speaking to Moses at the burning bush (Exo 3:14). It is highly expressive of His eternity and His deity. - McAllister, David
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Exodus 3:13-14 "And Moses said unto God, Behold, when I come unto the children of Israel, and shall say unto them, The God of your fathers hath sent me unto you; and they shall say to me, What is his name? what shall I say unto them? And God said unto Moses, I AM THAT I AM: and he said, Thus shalt thou say unto the children of Israel, I AM hath sent me unto you."