'Ply' in the Bible

If I go out into the field, I see those slain by the sword! If I go into the city, I see the ravages of the famine! Indeed, both prophet and priest ply their trade in the land, but they don't know anything.'"

because in one hour all the vast wealth has been laid waste.’ And every ship captain or navigator, and every passenger and sailor, and all who make their living by the sea, stood a long way off,