John 20:17
17 Jesus saith unto her, Touch me not; for I am not yet ascended to my Father: but go to my brethren, and say unto them, I ascend unto my Father, and your Father; and to my God, and your God.
Jesus definitely teaches that God the Father is the primary God in the godhead. He taught that we should worship the Father and pray unto him. But what you fail to realize is that Jesus is the second member of the godhead and is also considered God and has the fullness of the godhead. The godhead itself is the one true God for the members of that godhead work in perfect unity under the direction of the Father.
Revelation 3:12
12 Him that overcometh will I make a pillar in the temple of my God, and he shall go no more out: and I will write upon him the name of my God, and the name of the city of my God, which is new Jerusalem, which cometh down out of heaven from my God: and I will write upon him my new name.
Again, Jesus gives glory to the Father who is the head of the godhead.
Colossians 1:3
3 We give thanks to God and the Father of our Lord Jesus Christ, praying always for you,
As Jesus taught, his followers to pray and give thanks unto the Father. This does not mean that Jesus is not a God or a member of the godhead.
Ephesians 1:13,17
13 In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,
17 That the God of our Lord Jesus Christ, the Father of glory, may give unto you the spirit of wisdom and revelation in the knowledge of him:
Giving worship and reverence to God the Father does not diminish Jesus from being a member of the godhead. Jesus was chosen before the foundation of this earth to be a member of the godhead and it was He that appeared unto Abraham, Isaac, Jacob, and Moses and spoke to them face to face representing himself as God Almighty being a member of the godhead.
Exodus 6:1-3
1 Then the Lord said unto Moses, Now shalt thou see what I will do to Pharaoh: for with a strong hand shall he let them go, and with a strong hand shall he drive them out of his land.
2 And God spake unto Moses, and said unto him, I am the Lord:
3 And I appeared unto Abraham, unto Isaac, and unto Jacob, by the name of God Almighty, but by my name JEHOVAH was I not known to them.
Here we learn that God appeared unto Abraham, Isaac, Jacob and Moses. How do we know this was Jesus and not God the Father? We learn this from the Apostle John. Speaking of God the Father he tells us:
John 1:18
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.
Here John tells us that up until the time he wrote the Book of John, no man had seen God the Father at any time. He then teaches that the Only Begotten Son, which is in the bosom of the Father, he hath declared him. So if that wasn't God the Father who appeared unto Abraham, Isaac, Jacob, and Moses, then who was it? If no man had seen God the Father at any time, who appeared to these ancient prophets and spoke with them face to face.
Genesis 32:30
30 And Jacob called the name of the place Peniel: for I have seen God face to face, and my life is preserved.
Exodus 33:11
11 And the Lord spake unto Moses face to face, as a man speaketh unto his friend. And he turned again into the camp: but his servant Joshua, the son of Nun, a young man, departed not out of the tabernacle.
God, who spoke face to face with Moses was also the great I AM.
Exodus 3:14-15
14 And God said unto Moses, I AM THAT I AM: and he said, Thus shalt thou say unto the children of Israel, I AM hath sent me unto you.
15 And God said moreover unto Moses, Thus shalt thou say unto the children of Israel, The Lord God of your fathers, the God of Abraham, the God of Isaac, and the God of Jacob, hath sent me unto you: this is my name for ever, and this is my memorial unto all generations.
Jesus taught that he was the great I AM.
John 8:54-59
54 Jesus answered, If I honour myself, my honour is nothing: it is my Father that honoureth me; of whom ye say, that he is your God:
55 Yet ye have not known him; but I know him: and if I should say, I know him not, I shall be a liar like unto you: but I know him, and keep his saying.
56 Your father Abraham rejoiced to see my day: and he saw it, and was glad.
57 Then said the Jews unto him, Thou art not yet fifty years old, and hast thou seen Abraham?
58 Jesus said unto them, Verily, verily, I say unto you, Before Abraham was, I am.
59 Then took they up stones to cast at him: but Jesus hid himself, and went out of the temple, going through the midst of them, and so passed by.
Other verses in the Old Testament tell us that Jesus is the God of the Old Testament who came and represented the godhead.
Hosea 13:4
4 Yet I am the Lord thy God from the land of Egypt, and thou shalt know no god but me: for there is no saviour beside me.
Isaiah 43:3,11
3 For I am the Lord thy God, the Holy One of Israel, thy Saviour: I gave Egypt for thy ransom, Ethiopia and Seba for thee.
11 I, even I, am the Lord; and beside me there is no saviour.
Again, Christ Jesus is a member of the godhead and has represented the godhead as Jehovah and God Almighty. He is the God of the old testament who appeared unto Abraham, Isaac, Jacob, and Moses. The Father is the head of the godhead and Jesus does nothing but what the Father would have him do. He has the power as a member of the godhead to act in behalf of the Father and as a member of the godhead he is also God the Son.
Colossians 2:8-9
8 Beware lest any man spoil you through philosophy and vain deceit, after the tradition of men, after the rudiments of the world, and not after Christ.
9 For in him dwelleth all the fulness of the Godhead bodily.
Who was it that God spoke to in the following verse? Who is "us"? Who is "our"?
Genesis 1:26
26 And God said, Let us make man in our image, after our likeness: and let them have dominion over the fish of the sea, and over the fowl of the air, and over the cattle, and over all the earth, and over every creeping thing that creepeth upon the earth.
Who were they who said, "Let us make man in our image, after our likeness"?
It was God the Father and Jesus Christ. It was through Jesus Christ that the Father made all things. He is the "Word" of God.
John 1:1-3
1 In the beginning was the Word, and the Word was with God, and the Word was God.
2 The same was in the beginning with God.
3 All things were made by him; and without him was not any thing made that was made.
God the Father is the head of the godhead, but Jesus is a part of the godhead as the second member. He is the Firstborn of the Father and as part of the godhead he is also God.