How do we know Christ is the blessed man?

The blessed man encapsulated in Psalm 1 primarily refers to our Lord Jesus Christ, who is described as the straight, level, right, and happy one. He perfectly embodied the characteristics of the blessed man by resisting sin, meditating on the law of God, and fulfilling all righteousness. His delight in His Father’s will showcases His unique qualification as the blessed man. Unlike the ungodly, Christ's actions were entirely sinless, making Him the ultimate representative of what it means to be blessed before God.