Hebrews 9:10
since, with foods and drinks and various [ceremonial] washings, they are only outward regulations imposed until the time when everything would be made right [i.e., under the New Agreement].
Hebrews 10:22
we should draw close [to God] with a sincere heart and a fully assured faith, having had our hearts sprinkled from a guilty conscience [See 9:13-14] and having had our bodies washed with clean water [i.e., in our immersion].
1 John 1:7
But, if we live in the light [of righteousness] just like God [constantly] lives in the light [of righteousness], we can truly share a relationship with one another and [can know that] the blood of Jesus, God's Son, continues to cleanse [our spirits] from all of our sins.
Revelation 7:14
And I answered him, "Sir, [surely] you know." And he said to me, "These are the people who have come through the terrible persecution, and they have washed their robes and made them white with the blood of the Lamb.