Since “the Son of God” means the Lord in the human nature that he assumed in the world, which is a divine human nature, we can see what was meant by the Lord’s frequently saying that he was sent into the world by the Father and that he had gone forth from the Father. His being sent into the world by the Father means that he was conceived by Jehovah the Father. This and nothing else is the meaning of “being sent” and “sent by the Father,” as we can tell from all the places where it also says that he was doing the will of the Father and doing his works, which were overcoming the hells, glorifying his human nature, teaching the Word, and establishing a new church. The only way these things could have been done was by means of a human nature conceived by Jehovah and born of a virgin—that is, by God becoming human. Open up the passages where it says “being sent” and “sent,” and you will see: Matthew 10:40, for example, and Matthew 15:24; Mark 9:37; Luke 4:43; 9:48; 10:16; John 3:17, 34; 4:34; 5:23, 24, 36, 37, 38; 6:29, 39, 40, 44, 57; 7:16, 18, 28, 29; 8:16, 18, 29, 42; 9:4; 11:41, 42; 12:44, 45, 49; 13:20; 14:24; 15:21; 16:5; 17:3, 8, 21, 23, 25; 20:21. There are also the places where the Lord calls Jehovah “Father.”
Many people these days think of the Lord only as an ordinary person like themselves because they think only of his human nature and not at the same time of his divine nature, when in fact his human and divine natures cannot be separated. “The Lord is both God and a human being; and God and a human being in the Lord are not two but one person. He is one altogether, as the soul and the body are one human being”—this is according to what is taught throughout the Christian world, a teaching that has been ratified by councils and is called the Athanasian statement of faith. So that people will not keep thinking of the divine nature and human nature in the Lord as separate, I would ask them to read the passages from Luke cited above, and also this from Matthew:
The birth of Jesus Christ was like this. His mother, having been betrothed to Joseph, before they came together was found to be carrying a child from the Holy Spirit; and Joseph her husband, being an upright man and not wanting to disgrace her, decided to divorce her secretly. But while he was considering this, an angel of the Lord suddenly appeared to him in a dream, saying, “Joseph, son of David, do not be afraid to take Mary as your wife, because what is being born in her is from the Holy Spirit; and she will give birth to a son, and you will call his name ‘Jesus.’ He will save his people from their sins.” And Joseph woke from his dream and did as the angel of the Lord had commanded, and took [Mary] as his wife. But he did not have intercourse with her until she had given birth to her firstborn son. And he called his name “Jesus.” (Matthew 1:18–25)
We are assured by this passage and by what Luke says about the circumstances of the Lord’s birth, as well as by the passages cited earlier, that the Son of God is the Jesus who was conceived by Jehovah the Father and born of the Virgin Mary, the one of whom all the Prophets and the Law prophesied until John [Matthew 11:13; Luke 16:16].
from The Lord, Sections 20, 21