What does the Bible say about the sonship of Christ?

The sonship of Christ is a fundamental doctrine upheld throughout Scripture. In Matthew 22:42, Jesus poses the question to the Pharisees, 'What think ye of Christ, whose son is he?' They correctly answer that He is the 'son of David.' However, Jesus further challenges them by citing Psalm 110, where David calls Him 'Lord,' thus indicating that He is more than just a descendant of David; He is the eternal Son of God. This is affirmed in Romans 1:3-4, which speaks of Jesus being made of the seed of David according to the flesh but declared to be the Son of God with power. The duality of Christ’s sonship is crucial, as it establishes Him as both a rightful heir to David's throne and as divine, underscoring the mystery of the incarnation.