As for the Lord Jesus, being called the "only son" of God is just a way to stand on the standpoint of human beings, in order to show the unique position of the Lord Jesus among the children of God. All our children are created by God, but God's only son is the creator. The Lord Jesus is called the Son of God in the Bible because he was given to mankind and became a member of mankind. He is called the "firstborn" (col 1: 15), the "firstborn" of God (Hebrews 1:6), and he also calls us brothers (Hebrews 2: 65438+). Moreover, Christ will always maintain his humanity in the future and will always be called the "Son of Man". But he also wants to keep his original divinity forever. He is called our "eternal father" and we are also called his "children". Because Christ has many identities. The reason why the Lord Jesus is called the son of God is also to show his close relationship with the Father, but it does not mean that he did not exist originally, but was born later or separated from the Father.
We are his heirs, in other words, we are like adopted sons, because we are called righteous, accepted as children of God and born in the kingdom of God. In this way, Jesus Christ is still an only child. Although we are all called children of God, Jesus Christ has not lost his unique and unparalleled status as an only child.