Greetings Miz KJV Only,
For the Lord GOD will help me; therefore shall I not be confounded:
therefore have I set my face like a flint, and I know that I shall not be ashamed.
He is near that justifieth me; who will contend with me? Let us stand together:
who is mine adversary? Let him come near to me.
Behold, the Lord GOD will help me; who is he that shall condemn me?
Lo, they all shall wax old as a garment; the moth shall eat them up.
The passage you quoted prompted a few thoughts. Firstly I was interested what you intended by quoting this. Are you applying these words to yourself and if so do you feel in some difficult circumstance where you are facing some direct opposition and that you consider God will vindicate you against this opposition?
A few other aspects. What you have quoted is part of what has been described as the Third Servant Song, usually considered as Isaiah 50:4-9, and this describes Jesus, the Servant of Yahweh. Much could be said about this passage and the other three Servant Songs.
When you quoted the above passage you placed “Lord GOD” in bold. I am not sure if you noticed that this KJV rendition here is different than the normal KJV “LORD God” rendition in many other passages, where LORD is in capitals, rather than GOD in capitals as in Isaiah 50:7-9. I suggest that the KJV is very interesting here, and a careful consideration of the Hebrew words behind this is beneficial. I have some mixed feelings and some disagreement about your KJV Only position.