That's encouraging. Although I could disown my son legally, and he would no longer be my son, which is why we shouldn't equate God, our heavenly Father, with our earthly fathers 100%. And God goes to great lengths to explain that sonship is no longer determined by "bloodlines" but by faith in Christ, so that we are related to God now by His eternal decree and not our genes. But I get what you're saying.
So if you are now saved forever, and cannot be lost, do you believe you were always His? Before you were born, were you among the elect?
God foreknew me before the world began and He foreknew that I would believe in Him, that does not mean that He made the decision for me, which is why I cannot buy a vowel ksen :)
JM