וַיְדַבֵּ֥ר אֱלֹהִ֖ים אֶל־מֹשֶׁ֑ה וַיֹּ֥אמֶר אֵלָ֖יו אֲנִ֥י יְהוָֽה׃
Habló todavía Dios á Moisés, y díjole: Yo soy SEÑOR;
Noam Elimelekh
And this is "and El-him spoke", that "speaking" is the language of difficulty, and Elokim is the level of awe; and the explanation of "and spoke" is difficulty; "Elokim" means that when he was in the level of awe; "and said to him 'I am Ad-nai'" means when he came to the level of love that is 'Ad-nai' then the saying was in a softer language.
Noam Elimelekh
"And I appeared" (Ex. 6:3) - And Rashi, Z"l, wrote "And I appeared to the patriarchs". And at a first glance, what does Rashi want with this, doesn't the verse explain [itself] 'Avraham, Yitzchak etc' and we know that they are called 'patriarchs'. And it seems that the intention of Rashi with this is that Avraham was the attribute of Love (chesed), Yitzchak the aspect of Strength (gevurah) and Yaakov, Balance (tif'eret) and they influenced one another in their aspects, and if so, how was it applicable that El Shadai was seen to all? Isn't it that holiness (kedushah) comes from above according to a person's level? However, the root of this issue is this: from the side of the Blessed Creator there is no change whatsoever, rather, according to the service done by a person in their level [holiness] continues on them. We find that Avraham continued on himself the attribute of Love, and so Yitzchak in his attribute, and also too Yaakov, but from the side of the Blessed Creator, there is unified unique simplicity, and this is why Rashi z"l explained "I appeared to the patriarchs" meaning, that with regards to the Blessed Creator there is no separation or division between them at all, and everything is one, therefore [God] appeared to them in one aspect, as El Shadai. And this is easy to understand.