'Alert' in the Bible

When he sees chariots, teams of horses, riders on donkeys, riders on camels, he must be alert, very alert."

For the ruthless is brought to nothing, and the scoffer ceases, and all those who are alert to do evil are cut off --

The sovereign Lord has given me the capacity to be his spokesman, so that I know how to help the weary. He wakes me up every morning; he makes me alert so I can listen attentively as disciples do.