For those who have been enabled to have children.
Just as marriage is meant to represent the relationship between you and God, so to the outcome of representing marriage represents the outcome of representing God (life)
Malachi 2:15 Has not the one God made you? You belong to him in body and spirit. And what does the one God seek? Godly offspring. So be on your guard, and do not be unfaithful to the wife of your youth.
Romans 7:4 So, my brothers and sisters, you also died to the law through the body of Christ, that you might belong to another, to him who was raised from the dead, in order that we might bear fruit for God