The Lord God of your fathers. — Heb., Jehovah, God of your fathers. The “I AM” of the preceding verse (‘ehyeh) is modified here into Jahveh, or Jehovah, by a substitution of the third person for the first. The meaning of the name remains the same.
This is my name for ever. — Jehovah is the pre. dominant name of God throughout the rest of the Old Testament. (On the meaning of the name see Note on Genesis 2:4.) Rendered by the LXX. κύριος, [“Lord”] the name appears under that form everywhere throughout the Authorised Version printed in capitals. It does not occur in the New Testament, since “Lord” takes its place. An equivalent of the name occurs, however, frequently in the Revelation of St. John, where God appears as “He which is, and which was, and which is to come” (Revelation 1:4; Revelation 1:8; Revelation 4:8; Revelation 11:17; Revelation 16:5). Necessary, self-sustained, independent, eternal existence, must always be of his essence.
My memorial — i.e., the designation by which I shall be remembered.