Ephesians 1:3-6
Blessed be the God and Father of our Lord Jesus Christ, who has blessed us with every spiritual blessing in the heavenly places in Christ, 4 just as He chose us in Him before the foundation of the world, that we should be holy and without blame before Him in love, 5 having predestined us to adoption as sons by Jesus Christ to Himself, according to the good pleasure of His will, 6 to the praise of the glory of His grace, by which He made us accepted in the Beloved.
NKJV
If I use your criteria then all in Christ existed before Abraham was. If I use other Biblical uses of "ego eimi" to mean "I am God", then the blind man Jesus healed is also God as is Paul. What Jesus claimed to be is the Son of Man and the Son of God, but he never claimed to be the God.