In fact, when you say "Son of God," it does NOT mean: "begotten son." The term "Son of God," used thousands of years back, was used as a metaphor to describe a servant of God and a righteous person of God. So, Bible does say that his prophets INCLUDING Adam was the son of God (Luke 3), in the metaphorical sense that he was a servant of God and all prophets were servants of God. So, Jesus was NOT the only son of God, in that sense.
Furthermore, Jesus was NOT the "begotten" son of God, because the word "begotten" actually means God had to have had SEX with a woman, to have had the son. So, this is nonsense, as Jesus was NEVER the begotten Son of God.
KJV - John 3:16: "For God so loved the world, that he gave his only BEGOTTEN Son, that whosoever believeth in him should not perish, but have everlasting life."
This word "begotten" has been THROWN OUT by 32 Christians scholars, of the highest stautus, backed by 50 corporate denominations, who say that this word "begotten" is an: interpolation and HUMAN HANDIWORK, which could NOT be found in the earliest possible manuscripts, and which is why the following CANNOT be found in the NIV, RSV or NRSV. The NRSV goes back to the EARLIEST manuscripts we possibly have, and the word for "begotten" is NO-WHERE to be found there, which is why the NRSV for John 3:16 CORRECTLY reads:
"For God so loved the world that he gave his only Son, so that everyone who believes in him may not perish but may have eternal life."
Yes, Jesus was the son of God in the sense that he was a servant and slave of God, like all prophets were. NEVER was Jesus a "BEGOTTEN" son.