Looking at the context, we see this is one of the “Messianic Psalms,” and is mainly a prophecy relating to the church of Christ – the “bride” class, the faithful followers of Jesus who receive a heavenly reward. 

The “king’s daughter,” the bride of the King’s son, was to be formed of an elect class made up of Israelites, both those who were so by birth and those (Gentiles) who by faith and adoption, should become the seed of Abraham -“Israelites indeed” (Romans 9:6). 

The “fathers” of this class (Romans 11:28) were the patriarchs of old – Abraham, Isaac, Jacob, Moses, etc. These are referred to by the Apostle Paul in Hebrews 11:39,50 – “These all having obtained a good report through faith received not the promise, God having provided some better thing for us, that these without us should not be made perfect.”

The “better things” for the “us” class are the heavenly honors and the kingly powers and authority, to be conferred upon the bride, the “joint-heir” of the son of God. These who now are “children,” in the day of resurrection will “make perfect” and give life to the “fathers.” The relationship will then be reversed; the Father (Life-giver) will be the Christ – the Messiah – Jesus as the head and his church as the body – and the patriarchs, the fathers of Israel, will be the children.