In the beginning was the Word,and the Word was with God,and the Word was God.

In the beginning is not the start of things but rather “the vanishing point”.The vanishing point is where mans comprehend falls off.If you are veiwing a desert landscape,showing a road that goes out from you,disappearing into a point in the far distance,this is not the end of the road but merely the limit of your visions ability,so it is with this pharse “In the beginning”.

God is eternal so therfore has no begining nor end.

(Rev 1:8 I am Alpha and Omega, the beginning and the ending, saith the Lord, which is, and which was, and which is to come, the Almighty. Looking in Re 1:5 you will see that this is talking about Jesus Christ._

John10:30 I and my Father are one

Jesus also claimed what nobody else nor any  imposter has ever dared to claim that he was on equal ground with Almighty God.
John 17:5 And now, O Father, glorify thou me with thine own self with the glory which I had with thee before the world was.

Ps 90:2     Before the mountains were brought forth, or ever thou hadst formed the earth and the world, even from everlasting to everlasting, thou art God.
Col 1:15 Who is the image of the invisible God, the firstborn of every creature:

Col 1:16 For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him:

Col 1:17 And he is before all things, and by him all things consist.

Col 1:18 And he is the head of the body, the church: who is the beginning, the firstborn from the dead; that in all things he might have the preeminence.

Col 1:19 For it pleased the Father that in him should all fulness dwell;

Col 1:20 And, having made peace through the blood of his cross, by him to reconcile all things unto himself; by him, I say, whether they be things in earth, or things in heaven.

1tim 3:16 And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory.