This one is worth memorizing. I'm on a fan of memorization. God's Word commands us to stand firm and to keep from being polluted by the world. I found myself a challenge.
1JN 2:15-17 NIV
Do not love the world or anything in the world. If anyone loves the world, love for the Father is not in them. For everything in the world—the lust of the flesh, the lust of the eyes, and the pride of life—comes not from the Father but from the world. The world and its desires pass away, but whoever does the will of God lives forever.