1 Peter 3:21

the antitype, immersion, does, also, now save us, (not putting away the filth of the flesh; but seeking of a good conscience toward God,) by the resurrection of Jesus Christ;

Revelation 7:14

And I said to him, Sir, you know. And he said to me, These are they who have come out of much tribulation, and have washed their robes, and made them white in the blood of the Lamb:

Treasury of Scripture Knowledge

Summary

And thus shalt thou do unto them, to cleanse them: Sprinkle water of purifying upon them, and let them shave all their flesh, and let them wash their clothes, and so make themselves clean.

Bible References

Wash their

1 Peter 3:21
the antitype, immersion, does, also, now save us, (not putting away the filth of the flesh; but seeking of a good conscience toward God,) by the resurrection of Jesus Christ;
Revelation 7:14
And I said to him, Sir, you know. And he said to me, These are they who have come out of much tribulation, and have washed their robes, and made them white in the blood of the Lamb: