Is not this the fast that I have chosen? to loose the bands of wick…

In the sweat of thy face shalt thou eat bread, till thou return unto the ground; for out of it wast thou taken: for dust thou art, and unto dust shalt thou return. (Genesis 3:19)

Genesis 3:19 (KJV)

Therefore also now, saith the LORD, turn ye even to me with all your heart, and with fasting, and with weeping, and with mourning: And rend your heart, and not your garments, and turn unto the LORD your God. (Joel 2:12-13)

Joel 2:12 (KJV)

The sacrifices of God are a broken spirit: a broken and a contrite heart, O God, thou wilt not despise. (Psalm 51:17)

Psalms 51:17 (KJV)

Moreover when ye fast, be not, as the hypocrites, of a sad countenance: for they disfigure their faces, that they may appear unto men to fast... But thou, when thou fastest, anoint thine head, and wash thy face; That thou appear not unto men to fast, but unto thy Father which is in secret. (Matthew 6:16-18)

Matthew 6:16 (KJV)

So the people of Nineveh believed God, and proclaimed a fast, and put on sackcloth, from the greatest of them even to the least of them... and he arose from his throne, and he laid his robe from him, and covered him with sackcloth, and sat in ashes... But let man and beast be covered with sackcloth, and cry mightily unto God: yea, let them turn every one from his evil way. (Jonah 3:5-8)

Jonah 3:5 (KJV)

And I set my face unto the Lord God, to seek by prayer and supplications, with fasting, and sackcloth, and ashes. (Daniel 9:3)

Daniel 9:3 (KJV)