Christians - even the Bible says that Jesus was not God so why do you say he was ?

[John V]

"For there is ONE GOD and one mediator between God and men,
the MAN Christ Jesus" - 1 Tim. 2:5

Col 2
8 Beware lest anyone cheat you through philosophy and empty deceit, according to the tradition of men, according to the basic principles of the world, and not according to Christ. 9 For in Him dwells all the fullness of the Godhead bodily

The Bible, in both Old and New Testaments, is very emphatic about the absolute oneness of God. When asked which is the first commandment of all?"

Jesus answered (Mark 12:29) -
"The first of all the commandments is; Hear, O Israel, THE LORD OUR GOD IS ONE LORD."

But, if instead of quote mining, you read on, you'd see that Jesus then posed a question to them to get them thinking toward the divinity of the messiah:

Mark 12
35 Then Jesus answered and said, while He taught in the temple, “How is it that the scribes say that the Christ is the Son of David? 36 For David himself said by the Holy Spirit:

‘The Lord said to my Lord,
“Sit at My right hand,
Till I make Your enemies Your footstool.”’
37 Therefore David himself calls Him ‘Lord’; how is He then his Son?”