Do not be conformed to this world, but be transformed by the renewal of your mind, that by testing you may discern what is the will of God, what is good and acceptable and perfect. (Romans 12:2)
By now you must know that the Bible is made of...
How can a young man keep his way pure?
By guarding it according to thy word.
With my whole heart I seek thee;
let me not wander from thy commandments!
I have laid up thy word in my heart,
that I might not sin against thee. (Psalm 119:9-11)