Do Members of The Church of Jesus Christ of Latter-day Saints Believe Jesus is the God of the Old Testament?

We believe in the original teachings of The Lord Jesus Christ which He taught when He set up His Church when He lived upon the earth. The is why we are called The Church of Jesus Christ of Latter-day Saints. We do not follow the opinions of men that eventually replaced some of the Lord's teachings.

We believe that Jesus Christ was the Jehovah of the Old Testament and it was He who said:
3 And I appeared unto Abraham, unto Isaac, and unto Jacob, by the name of God Almighty, but by my name JEHOVAH was I not known to them.  Exodus 6:3
and                             
26 . . . ... all flesh shall know that I the Lord am thy Saviour and thy Redeemer, the mighty One of Jacob.  Isaiah 49:26  https://www.lds.org/media-library/images/category/teachings-bible-images?lang=eng

What is God Like?

Most of what I write is my attempt to answer a question someone has asked me. This article is part of my response to a woman who wanted to know what God is like. Some scriptures in the Bible made her wonder if He was a vengeful God. These are my comments.

I joined The Church of Jesus Christ of Latter-day Saints when I was 19 ( 46 years ago). I grew up in a religion that saw God as stern and unknowable. Coming to know Him has been a major concern in my life.