Charles Ellicott Commentary Isaiah 37:1

"And it came to pass, when king Hezekiah heard it, that he rent his clothes, and covered himself with sackcloth, and went into the house of Jehovah." — Isaiah 37:1 (ASV)

Covered himself with sackcloth. —The king was probably accompanied by his ministers, all in the penitential sackcloth of mourners (Joel 1:8–13; Jonah 3:5–6).