'Holy' in the Bible

The commander of Yahweh's army said to Joshua, "Take off your sandals from your feet, for the place where you [are] standing [is] holy." And Joshua did so.

But all of the silver and gold, and the items of bronze and iron, [are] holy to Yahweh, and they must go to Yahweh's treasury."

But Joshua said to the people, "You cannot serve Yahweh, for he [is] a holy and jealous God; he will not forgive your transgressions or your sins.