Similarly, Hashem’s Light “permeates” all the worlds in an internal way, according to the nature of each world and creature. It also “encompasses” all worlds equally, by giving them the fact that they exist, which is the same by all creatures. But the very Essence of Hashem is beyond all worlds entirely.
It is for this Essence of Hashem, this absolute truth of Hashem, that the spiritual beings are love sick for. And therefore, because of this concealment on Hashem’s Essence, the soul of every living being will truly long and yearn to cleave to the Infinite Hashem.
וְאִּי לָּז את, תִּּ כְס ף וְתִּכְל ה הַנּ פ ש שָּּמַמ אּוה־ךּורָּּב ף וס־ןיֵאְּב הָּקְבָּדְל .
And regarding this it was said, “Revive me with grapes and wine, strengthen me with the smell of apples,” which is a metaphor for the revelation of Hashem’s Infinite Light from out of its covering and concealment — since it is this revelation that brings “healing” for this “love sickness.”
וְעַל ז ה נ אֱמַר : "סַמְּכוּנִּי בָּּאֲש ִּ יש ו ת, רַפְּדוּנִּי בַּתַּפּוּחִּים" , ש הֵם עִּנְיַן אּוה־ךּורָּּב ף וס־ןיֵא ר וא תּוּלַּגְתִּה מֵהַה סְתֵּר וְה עְלֵם , אּוה ה ז יּוּליִּּג ש רְ פוּאָּה לְ "חו לַת אַהֲבָּה" זו .
In other words: Hashem does the mitzvah of “visiting the sick.” The “sick” are the souls and angels, and Sefiros etc. that have a tremendous yearning for the Infinite Hashem. This yearning is similar to the yearning of our soul for Hashem, down here in this world, especially in the time of exile, when Hashem is hidden.
How does Hashem “visit the sick” to make them feel better? He shines a deeper dimension of His Infinite Light into the beings of the Higher Worlds, giving them a closer connection to Himself, as it were. Hashem also shines His Light down to us in this world through the Torah that learn. In that sense, He also “visits the sick” of the Jewish people in this world. This type of “mitzvah” that Hashem does is purely spiritual.
When the verse says that Avraham does “Hashem’s Mitzvos” it means he performed the mitzvos spiritually, like how Hashem performs mitzvos, as in this example of “visiting the sick.”