Isaiah 44:20; Isaiah 58:5; Isaiah 61:3

Isaiah 44:20

20 He feeds on ashes; a deceived heart has turned him aside. And he cannot deliver himself, nor say, "Is there not a lie in my right hand?"

Isaiah 58:5

5 "Is it a fast like this which I choose, a day for a man to humble himself? Is it for bowing one's head like a reed And for spreading out sackcloth and ashes as a bed? Will you call this a fast, even an acceptable day to the LORD ?

Isaiah 61:3

3 To grant those who mourn in Zion, Giving them a garland instead of ashes, The oil of gladness instead of mourning, The mantle of praise instead of a spirit of fainting. So they will be called oaks of righteousness, The planting of the LORD , that He may be glorified.