Amos 4:13

Their enemy was the most formidable one imaginable. It was not another nation or army but sovereign Yahweh of armies. It was He who forms tangible and stable mountains, creates the intangible and transitory wind, knows people’s thoughts, turns dawn into darkness, and steps on the hills of Israel like a giant approaching Samaria. They could not escape His judgment, so they better prepare for it (cf. Micah 1:3-4).

"In one bold sweep, this hymn shows the sovereignty of God-from his creation of the world to his daily summoning of the dawn, from his intervention in history to his revelation of mankind’s thoughts. Every believer can take comfort in the fact that, while sometimes it seems that God does not interfere in human affairs, the world is never out of his control. His sovereignty extends to every aspect of human experience." [Note: McComiskey, p. 308.]

The description of God here (and in Amos 5:8 and Amos 9:5-6) is a divine royal titulary. This is a genre that was common in the ancient Near East, and it appears occasionally in the writing prophets. [Note: Niehaus, p. 323.] A titulary combines the name of the god or king with epithets that describe him.