Oh, I see. I do beg your pardon. So you mean something like this then:
Trinitarians rely on this verse (John 3:16) very heavily when trying to prove that Allah or Jehovah came down to earth to die for our sins. They claim that Jesus being God's unique son, makes him the only Son for God, which ultimately lead us to the conclusion that Jehovah is Jesus.
Also, let us look at Hebrews 11:17 "By faith Abraham, when God tested him, offered Isaac as a sacrifice. He who had received the promises was about to sacrifice his one and only son...." Abraham had two sons: Ishmael and Isaac. Ishmael was 13 years older than Isaac. Yet we see that "his one and only son" expression was used for Isaac. The Bible uses expressions like this to magnify people or to glorify someone on a certain occasion. The Bible in this verse glorifies Isaac for being the chosen sacrifice to God, according to what the Jews and Christians claim in their Bible. So Jesus being God's "only begotten Son" in John 3:16 doesn't make him God nor the only Son of God.