1 Peter 3:21
This water prefigured immersion [into Christ], which now also saves you, not by removing dirt from the [physical] body, but [by serving] as an appeal [or, "pledge"] to God for a clear conscience through the raising of Jesus Christ from the dead.
Revelation 1:5-6
[It is also] from Jesus Christ, who is the Faithful Witness [to the truth], the Firstborn from the dead [i.e., the first One raised never to die again], the Ruler of the kings of the world. May there be honor and power forever and ever to Christ, who loved us and released us from our sins by His blood [Note: Some manuscripts say "washed us" since the two words are spelled almost alike].
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.