Isa. 43:
10 Ye are my witnesses, saith the LORD, and my servant whom I have chosen: that ye may know and believe me, and understand that I am he: before me there was no God formed, neither shall there be after me.
Jahovah (Jesus) who is the only begotten Son of Heavenly Father!
John 1:
18 No man hath seen God at any time; the only begotten Son, which is in the bosom of the Father, he hath declared him.
Heb. 11:
17 By faith Abraham, when he was tried, offered up Isaac: and he that had received the promises offered up his only begotten son,
1 Jn. 4:
9 In this was manifested the love of God toward us, because that God sent his only begotten Son into the world, that we might live through him.
Here the word formed was used to describe how was formed in the belly.
Jer. 1:
5 Before I formed thee in the belly I knew thee; and before thou camest forth out of the womb I sanctified thee, and I ordained thee a prophet unto the nations.
Here we have pre mortal existence of the Spirit of the Prophet Jeremiah!
There is one unique Son of God which He has given, who is also one with the Father. There are many sons of god, but only one which is the great “I am”.
When people seek access to God the Father by any other, then they are antichrist.
Jesus Christ has come as God incarnate, one with Him, not to be confused as a created being.
But don’t take my word for it, take His without reading anything into it.
Joh 10:24-42
(24) Then came the Jews round about him, and said unto him, How long dost thou make us to doubt? If thou be the Christ, tell us plainly.
(25) Jesus answered them, I told you, and ye believed not: the works that I do in my Father’s name,they bear witness of me.
(26) But ye believe not, because ye are not of my sheep, as I said unto you.
(27) My sheep hear my voice, and I know them, and they follow me:
(28) And I give unto them eternal life; and they shall never perish, neither shall any man pluck them out of my hand.
(29) My Father, which gave them me, is greater than all; and no man is able to pluck them out of my Father’s hand.
(30) I and my Father are one.
(31) Then the Jews took up stones again to stone him.
(32) Jesus answered them, Many good works have I showed you from my Father; for which of those works do ye stone me?
(33) The Jews answered him, saying, For a good work we stone thee not; but for blasphemy; and because that thou, being a man, makest thyself God.
(34) Jesus answered them, Is it not written in your law, said, Ye are gods
(35) If he called them gods, unto whom the word of God came, and the Scripture cannot be broken;
(36) Say ye of him, whom the Father hath sanctified, and sent into the world, Thou blasphemest; because I said, I am the Son of God?
(37) If I do not the works of my Father, believe me not.
(38) But if I do, though ye believe not me, believe the works: that ye may know, and believe, that the Father is in me, and I in him.
(39) Therefore they sought again to take him: but he escaped out of their hand,
(40) And went away again beyond Jordan into the place where John at first baptized; and there he abode.
(41) And many resorted unto him, and said, John did no miracle: but all things that John spake of this man were true.
(42) And many believed on him there.
In regards to 1stJn 4:9, the term “only begotten Son” is an interesting phrase from the original word “monogenes”.
Whereas some assume this refers to his biologic son, this is not consistent with the rest of Scripture. For example, consider Hebrews 11:17, where the same word, monogenes , is used.
Heb 11:17
(17) By faith Abraham, when he was tried, offered up Isaac: and he that had received the promises offered up his (monogenes) son,
It might be noted that Abraham also had Issac, so we know the word isn’t used to mean an only begotten son, but perhaps better translated as a ‘unique’ or only unique son.