'Beware' in the Bible

“Then beware and be afraid of the sword [of divine vengeance] for yourselves,For wrathful are the punishments of that sword,So that you may know there is judgment.”

Beware lest ye say, We have found wisdom; God may vanquish him, not man:

Because there is wrath, beware lest he take thee away with his stroke: then a great ransom cannot deliver thee.