Matthew 3:4

Now John wore a garment of camel's hair, and a leather belt around his waist; and his food was locusts and wild honey.

Matthew 16:24

Then Jesus said to his disciples, "If anyone would come after me, let him deny himself and take up his cross and follow me.

John 21:7

Then that disciple whom Jesus loved said to Peter, "It is the Lord!" Now when Simon Peter heard that it was the Lord, he put on his outer garment (for he had removed it), and threw himself into the sea.

Acts 19:16

And the man in whom the evil spirit was leaped on them, overpowered all of them, and prevailed against them, so that they fled out of that house naked and wounded.

Revelation 11:3

And I will grant power to my two witnesses, and they will prophesy for twelve hundred and sixty days, clothed in sackcloth."

Treasury of Scripture Knowledge

Summary

At the same time spake the LORD by Isaiah the son of Amoz, saying, Go and loose the sackcloth from off thy loins, and put off thy shoe from thy foot. And he did so, walking naked and barefoot.

Bible References

The sackcloth

Matthew 3:4
Now John wore a garment of camel's hair, and a leather belt around his waist; and his food was locusts and wild honey.
Revelation 11:3
And I will grant power to my two witnesses, and they will prophesy for twelve hundred and sixty days, clothed in sackcloth."

Naked

John 21:7
Then that disciple whom Jesus loved said to Peter, "It is the Lord!" Now when Simon Peter heard that it was the Lord, he put on his outer garment (for he had removed it), and threw himself into the sea.
Acts 19:16
And the man in whom the evil spirit was leaped on them, overpowered all of them, and prevailed against them, so that they fled out of that house naked and wounded.