Before entering the Tabernacle or offering sacrifices, the priests must wash their hands and feet at the Laver; otherwise they would die. The washing of hands and feet at the Laver represents sanctification. Those who want to enter the Tabernacle to serve the Lord must first cleanse their way from evil doings (Hebrews 12:14). "How can a young man keep his way pure? By keeping it according to Your word." (Psalm 119:9)