Psalm 119:9-16 (ESV)
9 How can a young man keep his way pure?
By guarding it according to your word.
10 With my whole heart I seek you;
let me not wander from your commandments!
11 I have stored up your word in my heart,
that I might not sin against you.
12 Blessed are you, O Lord;
teach me your statutes!
13 With my lips I declare
all the rules  of your mouth.
14 In the way of your testimonies I delight
as much as in all riches.
15 I will meditate on your precepts
and fix my eyes on your ways.
16 I will delight in your statutes;
I will not forget your word.