In Hebrews 3:1-6, the author compares Christ to Moses. Moses was the greatest OT prophet and was “faithful in all God’s house” (Num 12:7). Having shown that Christ truly became a man, lowering himself below the angels, the author now shows that he is greater than the greatest of men, Moses. Whereas Moses is faithful in God’s house as the servant of God. Christ is faithful over God’s house as the Son of God. Moses was in the house. Christ is the builder of the house, who builds us up in faith by his Spirit.