Though memorizing scripture might sound dull, and tedious. For many Christians it is just something kids do in Sunday School. However memorizing scripture supplies Spiritual power to the Christian to overcome temptation and sin. Scripture tells us in Psalm 119:9 &11(ESV)
9) How can a young man keep his way pure?
By guarding it according to your word.
11) I have stored up your word in my heart,
that I might not sin against you.