The abstract noun "faithfulness" can be translated with an adjective. AT: "he remains faithful to his covenant forever" (See: [[rc://en/ta/man/translate/figs-abstractnouns]])
Here the four directions are given to emphasize that he gather them from everywhere. AT: "from every direction" or "from every part of the world" (See: [[rc://en/ta/man/translate/figs-merism]])
This describes the places that Yahweh gather his people from. AT: "he has gathered them from the east and from the west, from the north and from the south" (See: [[rc://en/ta/man/translate/figs-ellipsis]])