gathered an host.

1 Samuel 15:3-7
Now go and attack the Amalekites and completely destroy all that belongs to them. Do not spare them, but put to death men and women, children and infants, oxen and sheep, camels and donkeys.'" . . .

Exodus 17:14
Then the LORD said to Moses, "Write this on a scroll as a reminder and recite it to Joshua, because I will utterly blot out the memory of Amalek from under heaven."

Deuteronomy 25:19
When the LORD your God gives you rest from the enemies all around you in the land He is giving you to possess as an inheritance, you are to blot out the memory of Amalek from under heaven. Do not forget!