Isaiah 45:5, I am the LORD, and there is none else, there is no God beside me: I girded thee, though thou hast not known me:?

Jesus Christ is not God, his Father is.

YHVH(Jehovah) belongs at every single spot in the OT where wicked removed it and replaced it with-GOD or LORD all capitols. Yhvh(Jehovah) made the statement you posted. Not Yeshua.

By nature there is only one true God (John 17:3 & Eph 4:4)

(Gal 4:8) Howbeit then, when ye knew not God, ye did service unto them which by NATURE are no gods. (caps mine)

What was Jesus Christ's true nature -- was he a creation of God or was he creator himself BEFORE he became flesh ? (John 1:1-3, 14 & Col 1:15-17)

(Isa 45:5) I AM the Lord.

Jesus said he was 'I AM' before Abraham ever existed (John 8:58)

(Exod 3:14) And God said unto Moses, I AM THAT I AM.

How can there be (3) three when the Almighty God says there is only (1) one. 

Isa 45:5,6 

I am Jehovah, and there is no one else. 

There is no God except me. 

I will strengthen you, although you did not know me, 

In order that people may know 

From the rising of the sun to its setting 

That there is none besides me. 

I am Jehovah, and there is no one else.

The is no god and I am at peace

They can't all be false but they can be lesser gods if you like. Satan is a god by any definition and your God acknowledges his existence. The Bible names more than two dozen gods.