Kabbalah su II Samuele 8:78

Another explanation is that "The king by justice establishes the land" refers to King David, as it is written, "And David reigned over all Yisrael; and David executed judgment and righteousness to all his people" (II Shmuel 8:15). He established the land, and by his merit, it stood, "but he who exacts gifts overthrows it" refers to Rechav'am.

"Therefore the Elohim give you of the dew of heaven, and the fatness of the earth, and plenty of corn and wine" (Beresheet 27:28). Rabbi Abba said, This verse has already been explained. Nevertheless, come and look at the verse, "A song of ascent. In my distress I cried to Hashem, and He heard me" (Tehilim 120:1). How many songs and praises did David say before the Holy One, blessed be He, all in order to fix his grade and to make himself a name, as it is written, "And David got him a name" (II Shmuel 8:13). This song he said when he saw what Jacob accomplished, that he was answered and received the blessings. He said, "In my distress I cried to Hashem, and He heard me." [If it were not for Jacob, who received the blessings, the secret of the whole Mochin to construct the Nukva, David could not have made Her a name.]