(Devarim 3:24) "O L-rd (Yod-keh-vav-keh), G-d (Elokim)": Wherever "Yod-keh-vav-keh" is written, the attribute of mercy is intended, viz. (Shemoth 34:6) "Yod-keh-vav-keh," the G-d who is merciful and gracious." Wherever "Elokim" is written, the attribute of justice is intended, viz. (Ibid. 22:8) "Unto the judges ('elohim') shall come the matter of both," and (Ibid. 27) "Elokim ([Both G-d and judges are intended]) you shall not curse."
(Devarim 3:24) "O L-rd, G-d, You 'hachilotha'": You absolved me of my vow. When You said to me (Shemoth 3:10) "Go … and take My people the children of Israel out of Egypt," I said to you: I cannot, for I swore to Yithro that I would not leave him, as it is written (Ibid. 2:21) "Vayoel Mosheh to remain with the men," "ho'alah" being nothing other than an oath, as in (I Samuel 14:24) "And Saul beswore (vayoel) the people."