You and I fully realize that Isa 9:6 is a prophecy about Jesus, however since Jesus is not God, those titles that are applied to him are applied for a reason Taken. Since you highlighted the Everlasting Father, I will explain why Jesus was given that title, even though the Bible clearly shows that Jehovah is the Father. It is through Jesus Christ that regeneration to life comes. He is called “the last Adam . . . a life-giving spirit.” (1Co 15:45) As you stated prophecy designates him as “Eternal Father” (Isa 9:6) and as the one who “poured out his soul to the very death,” whose soul is ‘set as a guilt offering.’ He, as such “Father,” is able to regenerate mankind, thus giving life to those who exercise faith in the offering of his soul and are obedient.—Isa 53:10-12.
This explanation is not contradictory to the Bible as a whole. It may be right or it may be wrong, but Jesus personally stated that he is not the Father, and that the Father who is named Jehovah in the Bible is his God. If your understanding contradicts other Bible teachings, then it is your understanding that is in error, not the Bible.
I am not sure WHO you believe YOUR WORD is...but MY WORD, IS ME, just as EVERY other "PART" of me, that I claim AS MINE..IS me.
My blood, My heart, My hands, My stomach....mine, mine, mine....ME.
So also is MY WORD...mine, ME.
Gods THOUGHTS, Gods POWER, Gods HANDS, Gods WORD....IS GOD.
Gods THOUGHTS, Gods POWER, Gods WORD....comes forth OUT FROM GOD...WHILE it REMAINS IN God.
God has Numerous Names, Titles, Descriptions...ooh, imagine this...so also do ONE SAME man, have numerous Names, Titles, Descriptions!
And ... Everyone Shall receive a NEW NAME.
So whatever men are CALLING God, Gods Word, (Jesus), Gods Son, (Jesus) Gods High Priest (Lord), Gods Power (Christ), Gods Seed (Christ), Gods Wisdom (Christ), etc.
God decided...what He would be called, by men on this Earth...
Just like men decide what they will be called, by men on this Earth...
And ALL of those names WILL CHANGE, when a man sits IN and WITH, their everlasting Father, IN HIS KINGDOM. :)