Evidence 1:

The Lord said unto my Lord, Sit thou at my right hand, until I make thine enemies thy footstool. Psa 110:1

We see a messianic prophecy where God addressing Messiah whom David calls as Lord.

Evidence 2:

Come ye near unto me, hear ye this; I have not spoken in secret from the beginning; from the time that it was, there am I: and now the Lord God, and his Spirit, hath sent me. Isa 48:16

Jesus speaking here as the one who speaks from the beginning. He says God and His Spirit has sent Him.

Evidence 3:

And the Lord God said, Behold, the man is become as one of us, to know good and evil: and now, lest he put forth his hand, and take also of the tree of life, and eat, and live for ever: Gen 3:22

God speaking about man who became like one of them (plural).

Evidence 4:

For unto us a child is born, unto us a son is given: and the government shall be upon his shoulder: and his name shall be called Wonderful, Counsellor, The mighty God, The everlasting Father, The Prince of Peace. Isa 9:6

Another messianic prophecy where Messiah is called as both everlasting Father and mighty God.

Evidence 5:

But thou, Beth–lehem Ephratah, though thou be little among the thousands of Judah, yet out of thee shall he come forth unto me that is to be ruler in Israel; whose goings forth have been from of old, from everlasting. Micah 5:2

Messiah is from eternity who had no beginning.