Wash thyself therefore, and anoint thee, and put thy raiment upon thee.
Ruth had a special task to perform in order to claim her inheritance - a husband. Her mother-in-law gave her full instructions on what to do, including her preparation for the meeting with Boaz. Besides the obvious lesson - a pattern of behavior when going on a date - there is a spiritual lesson here. When we go to meet with the Lord Jesus, our heavenly Bridegroom, we need to do some preparation first and come into His presence in a respectable way.