Psalms 119: 66, 71, 75, 91, 125, 130
66 Teach me good judgment and knowledge, for I believe in thy commandments.
71 It is good for me that I was afflicted, that I might learn thy statutes.
75 I know, O LORD, that thy judgments are right, and that in faithfulness thou hast afflicted me.
91 By thy appointment they stand this day; for all things are thy servants.
125 I am thy servant; give me understanding, that I may know thy testimonies!
130 The unfolding of thy words gives light; it imparts understanding to the simple.

EWTN