Isaías 58

3 Why have we fasted, they say, and you see not? why have we afflicted our soul, and you take no knowledge? Behold, in the day of your fast you find pleasure, and exploit all your laborers.

4 Behold, you fast for strife and debate, and to strike with the fist of wickedness: you shall not fast as you do this day, to make your voice to be heard on high.

5 Is it such a fast that I have chosen? a day for a man to afflict his soul? is it to bow down his head as a bulrush, and to spread sackcloth and ashes under him? will you call this a fast, and an acceptable day to the LORD?

6 Is not this the fast that I have chosen? to loose the bonds of wickedness, to undo the heavy burdens, and to let the oppressed go free, and that you break every yoke?