What does Psalm 2:7 mean?

The psalmist, David (Acts 4:25), refers to God's mention of the king's right to rule. He recalls the covenant God made with him. This is a permanent decree authorizing Davidic rule. Second Samuel 7:13 provides God's promise at the time of David's coronation. God promised: "He shall build a house for my name, and I will establish the throne of his kingdom forever." This statement connects the idea of the promised Messiah being referred to as a "Son" of God.

Further, God referred to his relationship with David's promised descendant—the One with a "kingdom forever" as a father-son relationship. He said, "I will be to him a father, and he shall be to me a son" (2 Samuel 7:13–14). The covenant relationship between God and King David finds a greater fulfillment in the relationship of Father-Son that exists between God and His Son, the Messiah. John 3:16 emphasizes this relationship by stating, "For God so loved the world, that he gave his only Son…"