let us draw near with a sincere heart in full assurance of faith, having our hearts sprinkled to cleanse us from a guilty conscience and our bodies washed with pure water. — Hebrews 10:22

"our bodies washed with pure water" — the external points to the internal. The tabernacle laver foreshadowed our cleansing in Christ. Your body is the temple of the Holy Spirit, and you present it as a living sacrifice. Nothing unclean enters God's presence, and Christ has made you clean so that in your flesh you will see God.