Exodus 6:1-3

Young's Literal Translation

6 And Jehovah saith unto Moses, `Now dost thou see that which I do to Pharaoh, for with a strong hand he doth send them away, yea, with a strong hand he doth cast them out of his land.'

² And God speaketh unto Moses, and saith unto him, `I [am] Jehovah,

³ and I appear unto Abraham, unto Isaac, and unto Jacob, as God Almighty; as to My name Jehovah, I have not been known to them;