No. Jesus isn't a separate god.
Majority of English Translations does not read 'a god' in John 1:1c.
John 1:1
New International Version In the beginning was the Word, and the Word
was with God, and the Word was God.
New Living Translation In the beginning the Word already existed. The
Word was with God, and the Word was God.
English Standard Version In the beginning was the Word, and the Word
was with God, and the Word was God.
New American Standard Bible In the beginning was the Word, and the
Word was with God, and the Word was God.
King James Bible In the beginning was the Word, and the Word was with
God, and the Word was God.
Holman Christian Standard Bible In the beginning was the Word, and the
Word was with God, and the Word was God.
International Standard Version In the beginning, the Word existed. The
Word was with God, and the Word was God.
NET Bible In the beginning was the Word, and the Word was with God,
and the Word was fully God.
Aramaic Bible in Plain English In the origin The Word had been
existing and That Word had been existing with God and That Word was
himself God.
GOD'S WORD® Translation In the beginning the Word already existed. The
Word was with God, and the Word was God.
The translation "the Word was a god" makes us ask in what way is Jesus divine?
The Bible only speaks of three categories of divinities:
1) True God - God by nature [Trinity: Mt. 28:18;Jn. 17:3;Col 2:9; 1 Jn. 5:20-21).
2) God by function ( Shaliach Principle) - not god by nature [angels: Ex 15:11; humans: Ex 7:1, Ps 82:6-7].
3) False gods - not gods by nature [idols/demons/Satan: 1 Cor. 8:5; Gal. 4:8, 1 Cor. 4:4].
So, where does Christ belong?
Christ cannot belong either to the gods by function or to the false gods because he is , fully and completely, God by nature ( Col. 2:9;Jn 10:28-30).He can only belong to the Trinity -- three ontologically equal and functionally subordinate persons ( Mt. 28:19).
Angels are called 'gods' in Exodus 15:11 but these angels are not , by nature, gods. Rather, they are created by God (Psalm 33:6, Colossians 1:16).
Who is like unto thee, O Jehovah, among the gods? Who is like thee,
glorious in holiness, Fearful in praises, doing wonders? Exodus 15:11 (ESV)
Humans are also called 'gods.'
I said, "You are gods, And all of you are sons of the Most
High."Nevertheless you will die like men And fall like any one of the
princes." Psalm. 82:6-7 (NIV)
But these humans were not ,by nature, gods. Rather, they were merely such by title never by nature.
Satan himself is the god of this age (2 Corinthians 4:4).Yet we know that Satan is not, by nature, a god.
Paul said that the Galatian Christians were formerly slaves to false deities:
However at that time, when you did not know God, you were slaves to
those which by nature are no gods. Galatian 4:8 (NASB)
These deities are false simply because they are not gods by nature.
On the other hand, Jesus Christ is, fully and completely, God in nature ( Colossians 2:9). He is of same nature with the Father (John 10:28-30;Hebrews 1:3).
In Him dwells all the completeness of the Godhead bodily"( Colossians
2:9 NLT).
28 I give them eternal life, and they shall never perish; no one
will snatch them out of my hand. 29 My Father, who has given them
to me, is greater than all[a]; no one can snatch them out of my
Father’s hand. 30 I and the Father are one.” John 10:28-30 (NIV)
He is the radiance of the glory of God and the exact imprint of his
nature, and he upholds the universe by the word of his power. After
making purification for sins, he sat down at the right hand of the
Majesty on high,Hebrews 1:3 (ESV)
NOTE
The Nature of God
A "nature" is something inherently belongs to someone.
The Divine Nature, in the context of the true God, is the nature of God himself.
Nature means "set of attributes."
In the Holy Scriptures, the word for this is many and they are the following:
THEOS in qualitative sense ( as in John 1:1).
THEIAS - divine nature ( God-like nature when used to creatures). 2 Peter 1:3, 4
THEIOS -divine nature ( Acts 17:29).
THEIOTES -divine nature ( Romans 1:20).
THEOTETOS - (dual meaning) divine nature plus divine identity. Colossians 2:9 [9]
The following are God's attributes:
God is eternal ( without beginning or ending of life) and hence, his attributes are all eternal.
Psalm 90:2, Romans 1:20
God is ( eternally) love:
1 John 4:8
God is (eternally) wise:
Romans 16:27
God is (eternally) good:
Mark 10:18
God is (eternally) omnipotent
Revelation 1:8
God is (eternally) omnipresent
Psalm 46:1, Psam 139:11-12
God is (eternally) omniscient
1 John 3:20
God is (eternally) immutable
Malachi 3:6, James 1:17
God's nature is eternally one ( Exodus 3:14, Romans 1:20) and it only exists in the three persons: Father, Son and Holy Spirit ( Matthew 28:19).Humans and angels, the Pantheon of the Greeks, are all "not gods by nature"( Galatians 4:8).
jehovahs-witnesses
. The answer accepted is not from a Witness perspective. In fact, none of the answers so far given are from a Witness perspective. (For the record, Witnesses are not polytheists.)