Albert Barnes Commentary Jeremiah 46:15

"Why are thy strong ones swept away? they stood not, because Jehovah did drive them." — Jeremiah 46:15 (ASV)

Translate it: Why is thy mighty one cast down? He stood not, because Yahweh thrust him down. The “mighty one” is explained by the Septuagint to be the bull Apis. Thus:

1. the chief deity of Egypt (Jeremiah 46:15);
2. the army of mercenaries (Jeremiah 46:16);
3. the king, Pharaoh (Jeremiah 46:17).

These are the three upon whom the Egyptians trusted.