With the Psalms it serves as a reminder to me of who God is and what he has done for me.
With Proverbs I am reminded the wisdom and lessons from the Bible still apply today even more so.
With the New Testament and Matthew it shows that even though Jesus could have chosen anybody to be His disciples He chose common fisherman to be some of the first. Showing that God can use anybody to reach people for Jesus. Everyday people really can make a difference for the Kingdom of God.