No angel was ever called the Son of God. Jesus is described as the first born of all creation, not the first created angel. Jesus was not a creature, but the eternal creator, John 1:10. The Angel of the Lord was a special messenger of God in the OT like the angel that revealed those things to John in Revelations 1:1 as Jesus sent the angel to him. Those in the OT that said they saw God were actually seeing an angel knowing that the angel was sent to them by God. 2 Timothy 1:9 Who hath saved us, and called us with an holy calling, not according to our works, but according to his own purpose and grace, which was given us in Christ Jesus before the world began, Colossians 1:15 Who is the image of the invisible God, the firstborn of every creature: 16 For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him: 17 And he is before all things, and by him all things consist. John 1:10 He was in the world, and the world was made by him, and the world knew him not. Angels have no gender (Matthew 22:30) and are innumerable (Hebrews 12:22). They are incarnate in human form at times (Genesis 18:2-8) for the purpose of ministry. Angels also express emotions (Luke 15:10), are wise (2 Samuel 14:20) and powerful (Psalms 103:20). They serve as messengers to communicate God's will to men. They helped reveal the law to Moses (Acts 7:52-53), and served as the carriers of much of the material in Daniel, and Revelation. Angels gave instructions to Joseph about the birth of Jesus (Matthew 1-2), to the women at the tomb, to Philip (Acts 8:26), and to Cornelius (Acts 10:1-8). God has used angels to provide physical needs such as food for Hagar (Genesis 21:17-20), Elijah (1 Kings 19:6), and Christ after His temptation (Matthew 4:11).