'Vigilant' in the Bible

it behoveth, therefore, the overseer to be blameless, of one wife a husband, vigilant, sober, decent, a friend of strangers, apt to teach,

Women -- in like manner grave, not false accusers, vigilant, faithful in all things.

Be sober, vigilant, because your opponent the devil, as a roaring lion, doth walk about, seeking whom he may swallow up,