Those are your words not mine. I never said anything about pre-existence of souls.
I see life as a gift, something that can be given. God did not create life, it's something he has always had. There was never a time that God did not have life. Life is who he is and who he has always been.
Our parents gave us life, but God gives us eternal life. If you want to, we can define eternal life as having no beginning and no end, God himself being an example of eternal life, no beginning and no end.
God is life and he is the source of life for us. In a physical sense God is our father through adoption, we each have had a physical father, but God is our spiritual father through regeneration. We become a part of his Spirit, a part of who he is and always will be. If we are faithful we are inseparable from God and from his Son. If we are not faithful God will reclaim his life. He doesn't reclaim the life our parents gave us, he reclaims the life he gave us. Our parents did not give us eternal life, they gave us temporal life, a life that could end in an instant. But God offers us eternal life, life that did not begin with us, God gives us life that had no beginning and will have no end.
God did not create his life, it is something he has always had and no one can take his life from him. This is the life he offers to us, not a temporal life like our parents gave us but eternal life, his eternal life that can be ours through being faithful to him until our change to a spiritual body like his and the receipt of immortality, which is life inherent.
God's soul mate who became Jesus Christ also had neither beginning of days nor end of life, that is until he surrendered his immortality to become mortal like us. Had the mortal Jesus sinned he would have incurred eternal death with no one to save him or redeem him.
Jesus laid his eternity on the line for us and for all who come after us.