Matthew 3:4

This 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 any man wishes to come after me, let him renounce self, take up his cross, and follow me.

John 21:7

Then that disciple whom Jesus loved said to Peter, "It is the Lord!" On hearing that it was the Lord, Simon Peter girt his fisher's coat about him (for he was naked), and threw himself into the water.

Acts 19:16

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

Revelation 11:3

And I will give power to my two witnesses, and clothed in sackcloth they shall prophesy a thousand two hundred and threescore days.

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
This 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 give power to my two witnesses, and clothed in sackcloth they shall prophesy a thousand two hundred and threescore days.

Naked

John 21:7
Then that disciple whom Jesus loved said to Peter, "It is the Lord!" On hearing that it was the Lord, Simon Peter girt his fisher's coat about him (for he was naked), and threw himself into the water.
Acts 19:16
And the man in whom the evil spirit was sprang on two of them, overpowered them and prevailed against them, so that they fled out of the house naked and wounded.