σάκκος sákkos

Greek · Strong's G4526 · used 4 times in 4 verses

Meaning

"sack"-cloth, i.e. mohair (the material or garments made of it, worn as a sign of grief)

In the King James Version: sackcloth

Derivation: of Hebrew origin (H08242);

Matthew 11:21 “Woe to you, Chorazin! Woe to you, Bethsaida! For if the miracles that were performed in you had been performed in Tyre and Sidon, they would have repented long ago in sackcloth and ashes.
Luke 10:13 Woe to you, Chorazin! Woe to you, Bethsaida! For if the miracles that were performed in you had been performed in Tyre and Sidon, they would have repented long ago, sitting in sackcloth and ashes.
Revelation 6:12 And I watched as the Lamb opened the sixth seal, and there was a great earthquake, and the sun became black like sackcloth of goat hair, and the whole moon turned blood red,
Revelation 11:3 And I will empower my two witnesses, and they will prophesy for 1,260 days, clothed in sackcloth.”