Matthew 3:11

I indeed baptize you with water unto repentance; but He that cometh after me, is mightier than I, whose shoes I am not worthy to carry: He shall baptize you with the holy Spirit and with fire.

Luke 11:38-39

And when the pharisee saw it he wondered that He did not wash first, before dinner.

Ephesians 5:26-27

to sanctify and cleanse it with the washing of water by the word,

Hebrews 9:9-10

Which figure remains to the present time, wherein gifts and sacrifices are offered, that cannot perfect the worshipper as to his conscience,

Hebrews 10:22

let us draw near with sincerity, in the full assurance of faith, having our hearts cleansed from an evil conscience, and our bodies washed with pure water.

1 Peter 3:21

The resemblance of which, even baptism, doth also now save us, (not the outward cleansing of filth from the flesh, but the answer of a good conscience towards God) by the resurrection of Jesus Christ,

Revelation 1:5

and from Jesus Christ, who is the faithful witness, the first-born from the dead, and the ruler of the kings of the earth. To Him that loved us, and washed us from our sins in his own blood,

Treasury of Scripture Knowledge

Summary

But it shall be, when evening cometh on, he shall wash himself with water: and when the sun is down, he shall come into the camp again.

Bible References

Wash himself

Matthew 3:11
I indeed baptize you with water unto repentance; but He that cometh after me, is mightier than I, whose shoes I am not worthy to carry: He shall baptize you with the holy Spirit and with fire.
Luke 11:38
And when the pharisee saw it he wondered that He did not wash first, before dinner.
Ephesians 5:26
to sanctify and cleanse it with the washing of water by the word,
Hebrews 9:9
Which figure remains to the present time, wherein gifts and sacrifices are offered, that cannot perfect the worshipper as to his conscience,
Hebrews 10:22
let us draw near with sincerity, in the full assurance of faith, having our hearts cleansed from an evil conscience, and our bodies washed with pure water.
1 Peter 3:21
The resemblance of which, even baptism, doth also now save us, (not the outward cleansing of filth from the flesh, but the answer of a good conscience towards God) by the resurrection of Jesus Christ,
Revelation 1:5
and from Jesus Christ, who is the faithful witness, the first-born from the dead, and the ruler of the kings of the earth. To Him that loved us, and washed us from our sins in his own blood,