Charles Spurgeon Commentary Isaiah 58:6-7

"Is not this the fast that I have chosen: to loose the bonds of wickedness, to undo the bands of the yoke, and to let the oppressed go free, and that ye break every yoke? Is it not to deal thy bread to the hungry, and that thou bring the poor that are cast out to thy house? when thou seest the naked, that thou cover him; and that thou hide not thyself from thine own flesh?" — Isaiah 58:6-7 (ASV)

And to let the oppressed go free, and that you break every yoke?

Is it not to deal your bread to the hungry,

It is God's kind of fasting to give what you would have eaten yourselves, to let others feast. To deal your bread to the hungry.