(John Piper began this sermon by reciting Psalm 1, Psalm 16, Psalm 103, Romans 5:1--8, Romans 8, Matthew 6:25--34, and 1 Corinthians 13.) 

The point of reciting these Scriptures is to motivate you by way of example to memorize Scripture in 2009. This message is a mingling of my testimony of the value of memorizing Scripture with Jesus' testimony in the Gospel of John.

Full sermon with explanation here: https://youtu.be/FOkLP6VHtWk