God did not lie in this situation.
What happened, is that Jesus as a Man, tho Deity, lived as a man under the law, with Free Will.
"Free Moral Agency".
So, as a Man, Jesus had the right and the choice, to not go to the Cross.
He had that CHOICE, as that is FREE WILL, that is given to all Men.
Jesus is the 2nd ADAM, and the 1st is also a MAN.
Christ used His Free Will to do His Father's will.
This does not preclude Christ from Being "and the WORD was GOD"......as Jesus pre-incarnate is the WORD, who is God.
And Jesus the Man, is God, yet, a man, now risen as the Lord of Glory.