(Before It's News)
10 For I hear many whispering. Terror is on every side! “Denounce him! Let us denounce him!” say all my familiar friends, watching for my fall. “Perhaps he will be deceived, then we can overcome him, and take our revenge on him.”
11 But the LORD is with me as a dread warrior; therefore my persecutors will stumble, they will not overcome me. They will be greatly shamed, for they will not succeed. Their eternal dishonor will never be forgotten.
12 O LORD of hosts, who triest the righteous, who seest the heart and the mind, let me see thy vengeance upon them, for to thee have I committed my cause.
13 Sing to the LORD; praise the LORD! For he has delivered the life of the needy from the hand of evildoers.

Source:
http://www.catholicnewsagency.com/calendarday.php?date=2017-04-07#rd_0