The phrase "Son of God" is a title of Jesus. It implies His deity (John 5:18) because the title is one of equality with God. In the Old Testament it was figuratively applied to Israel (Exo 4:22). In the New Testament it is applied to Christ (Luke 1:35). It has many facets, for example: It shows that He is to be honored equally with the Father (John 5:22-23); that He is to be worshiped (Matt. 2:2,11; 14:33; John 9:35-38; Heb. 1:6); called God (John 20:28; Col. 2:9; Heb. 1:8); prayed to (Acts 7:55-60; 1 Cor. 1:1-2).