||God then said to Moses, 'You must [then] say to the Israelites, 'YHVH, the God of your fathers, the God of Abraham, Isaac and Jacob, sent me to you.' This is My eternal name, and this is how I am to be recalled for all generations.
Vayomer od Elohim el-Moshe koh tomar el-beney Yisra'el Adonay Elohey avoteychem Elohey Avraham Elohey Yitschak ve'Elohey Ya'akov shlachani aleychem zeh-shemi le'olam vezeh zichri ledor dor.
This is the Tetragrammaton which may not be pronounced under any circumstances (cf. Sanhedrin 90a; Philo, De Vida Moses 3:519, 529). If this section is read out loud, this name should be read as 'Lord' (cf. Septuagint). This name denotes God's utter transcendence (Kuzari 2:2; Moreh Nevukhim 1:61). This name also denotes the creative power that constantly sustains the universe. God is telling Moses that not only is the initial purpose of creation now being fulfilled, but also the process that will insure its continual existence.
The Tetragrammaton denotes the level where past, present and future are the same (Tur, Orach Chaim 5; Rabbi Eliezer of Garmiza on Sefer Yetzirah 1:1).