John Gill Commentary Exodus 6:2

"And God spake unto Moses, and said unto him, I am Jehovah:" — Exodus 6:2 (ASV)

And God spoke to Moses, and said to him, I am the Lord .
Or Jehovah, the self-existent Being, the Being of beings, the everlasting I am, the unchangeable Jehovah, true, firm, and constant to his promises, ever to be believed, and always to be depended on.