Is there anywhere in the bible where it says that babies choose or pick their parents before birth? Do children already know their parents before birth?
Kids knowing their parents before they're born isn't mentioned in the bible. Scripture does, however, talk about how God knows each person before they're born.
Jeremiah 1:5 ESV Before I formed you in the womb I knew you, and before you were born I consecrated you; I appointed you a prophet to the nations.
Although I do not know everything that is said in the Bible, I can find no place where the children choose their parents, nor do I find any place where the parents choose their children. I do find several places where God decides who does and who does not have Children.
Psalms 127:3 through 5 KJV Lo, children are an heritage of the LORD: and the fruit of the womb is his reward. 4 As arrows are in the hand of a mighty man; so are children of the youth. 5 Happy is the man that hath his quiver full of them: they shall not be ashamed, but they shall speak with the enemies in the gate.
Deuteronomy 30:9 KJV And the LORD thy God will make thee plenteous in every work of thine hand, in the fruit of thy body, and in the fruit of thy cattle, and in the fruit of thy land, for good: for the LORD will again rejoice over thee for good, as he rejoiced over thy fathers:
AS I read this God chooses to give children to parents as a reward, and that can be understood in several ways. Good children might be thought of as a reward for good, and bad children could be considered a reward for bad behavior.
But we also must consider it from God's perspective, and that is a bit harder to contemplate.
Matthew 18:12 and 13 KJV How think ye? if a man have an hundred sheep, and one of them be gone astray, doth he not leave the ninety and nine, and goeth into the mountains, and seeketh that which is gone astray? 13 And if so be that he find it, verily I say unto you, he rejoiceth more of that sheep, than of the ninety and nine which went not astray.
God will make every effort to bring all to salvation.
Matthew 18:14 KJV Even so it is not the will of your Father which is in heaven, that one of these little ones should perish.
Paul in his first epistle to the Corinthians said:
1st. Corinthians 7:16 KJV For what knowest thou, O wife, whether thou shalt save thy husband? or how knowest thou, O man, whether thou shalt save thy wife?
So from my Southern Baptist concept I extend that to say that you may need to do a little self examination, to determine exactly why God chose you specifically to be the child of your parents. Was it a reward for good, for bad, or possibly as the person to lead them and /or many others into the Kingdom of God.