David in this Psalm is praising YHWH for the city of Jerusalem where the House of God was and for the opportunity for all of the tribes of Israel to gather as the chosen nation and the children of YHWH to worship, give thanks, and pray for continued peace, and prosperity. All this for the sake of the house of God and for the sake of the brotherhood.
This is the account given where the daughters of men were married to the sons of God, which can be understood as Angels, fallen angels, or other beings we don’t know about, but the result was a group known as Nephilim, Giants perhaps as Numbers 13.33 suggests, and they warred with Israel in the account in Numbers. In this early time of mankind on the earth already God was seeing that their hearts were prone to evil continually.
Hebrews 11. 1-7
Faith is the assurance of things hoped for and the evidence of things not seen. Faith, as used in the broad sense in scripture, is always used in reference to trust in the Messiah. In the Old Testament it was in reference to the coming of the promised Messiah, in the New Testament it used referring to the Messiah as having already come. The cross being the focal point of all history. As these scriptures point out the fallen state of mankind, the heartfelt desire of man for peace, and the result that God accomplished through the redemption of mankind through the finished work of Christ, as Romans 5.1 says so clearly. “Therefore having been justified through faith, we have peace with God through our Lord Jesus Christ.” When the Angels sang at Christ’s birth about peace on earth they were not referring to a time of no more war, but of the peace that would come between God and man, the barrier of sin being done away with.
Give thanks this season for the forgiveness brought to us through our Savior Jesus our Lord.