The Bible confirms that Jesus is not the unique son of God.
Do the few I mentioned have this "unique begotten son relationship"? Is Jesus still unique because he had no father, well brothers and sisters, Adam and Eve had no father or mother. Jesus is a word of God, God said "be" and then Jesus was here and will return as confirmed in the Holy Qur'an 19:9. It is Blasphemy to say God begotten (sired) Jesus.
Jesus called himself son of man and refused to be called son of God. "And the devils also came out of many, crying out, and saying, Thou art Christ the Son of God. And he rebuking them suffered them not to speak; for they knew that he was Christ."
(Luke 4:11) and again "He [Jesus] said unto them [the disciples], But whom say ye that I am? Peter answering said, The Christ of God. And he straightly charged them, and commanded them to tell no man that thing." (Luke 9:20 and 21).