2 Samuel 15:31

And [one] told David, saying, Ahithophel [is] among the conspirators with Absalom. And David said, O LORD, I pray thee, turn the counsel of Ahithophel into foolishness.

Ver. 31. Turn the counsel of Ahithophel into foolishness.] This was done accordingly: great is the power of faithful prayer, The queen-mother of Scotland was heard to say, that she more feared the prayers of John Knox than an army of fighting men.