No longer doing certain actions is spoken of as if it were turning away from those actions. The phrases "evil ways" and "wicked practices" mean basically the same thing. Alternate translation: "Stop doing all of your wicked actions" (See: [[rc://en/ta/man/translate/figs-metaphor]] and [[rc://en/ta/man/translate/figs-doublet]])
Yahweh speaks of himself by name to express the certainty of what he is declaring. See how you translated a similar phrase in [Zechariah 1:3](./03.md). Alternate translation: "this is what Yahweh has declared" or "this is what I, Yahweh, have declared" (See: [[rc://en/ta/man/translate/figs-123person]])