Nehemiah 4:9
"Nevertheless we made our prayer unto our God, and set a watch against them day and night, because of them."
Cross References (ranked by relevance)
Be sober, be vigilant; because your adversary the devil, as a roaring lion, walketh about, seeking whom he may devour:
And call upon me in the day of trouble: I will deliver thee, and thou shalt glorify me.
Watch ye therefore, and pray always, that ye may be accounted worthy to escape all these things that shall come to pass, and to stand before the Son of man.
Watch and pray, that ye enter not into temptation: the spirit indeed is willing, but the flesh is weak.
And he said, Thy name shall be called no more Jacob, but Israel: for as a prince hast thou power with God and with men, and hast prevailed.
And our adversaries said, They shall not know, neither see, till we come in the midst among them, and slay them, and cause the work to cease.