Yahweh is God and He is the Creator of the Universe. Gen 1:1

Exo 3:13 And Moses said unto God, Behold, when I come unto the children of Israel, and shall say unto them, The God of your fathers hath sent me unto you; and they shall say to me, What is his name? what shall I say unto them?
Exo 3:14 And God said unto Moses, I AM THAT I AM: and he said, Thus shalt thou say unto the children of Israel, I AM hath sent me unto you.
The Other Title to God Yahweh in Bible
Elohim (Creator God) Isaiah 40:28,Genesis 11,Deuteron 32:6
El Roi (The God who sees me) Genesis 16:13, Psalm 139:12
El Shaddai (Lord God Almighty) Psalms 84:8,Psalm 84:10-12
Yahweh Rophe (The Lord Heals) 2 Kings 20:5, Exo15:26,Isa 30:26.
Yahweh Yireh (The Lord will Provide) Gen 22:14.Deu 15:4-5.
Yahweh Shammah (The Lord is There) Ezekiel 48:35
Yahweh Nissi (The Lord My Banner) Exodus 17:15-16.
Yahweh-Raah (The Lord My Shepherd) Psalm 23:1.
Ish (Husband) Hosea 2:16, Hosea 2:19-20
Yahweh Shalom (The Lord Is Peace) Judges 6:24
Almighty (God Yahweh ) Rev 1:18
Most High (God in Heaven and Earth ) Acts 7 :48
Creator God (Creator of the Universe) Rom 1: 20
Majesty on High (High God in the Universe ) Heb 1: 3