The Book of Isaiah is accepted as canonical by all major Christian traditions and Judaism. It is traditionally placed first among the Major Prophets due to its length and depth of messianic prophecy.
Isaiah
Chapter 58
"Cry aloud! Don't spare! Lift up your voice like a trumpet! Declare to my people their disobedience, and to the house of Jacob their sins.
Yet they seek me daily, and delight to know my ways, as a nation that did righteousness, and didn't forsake the ordinance of their God. They ask me for righteous judgments. They delight to draw near to God.
'Why have we fasted,' say they, 'and you don't see? Why have we afflicted our soul, and you don't notice?' "Behold, in the day of your fast you find pleasure, and oppress all your laborers.
Behold, you fast for strife and contention, and to strike with the fist of wickedness. You don't fast today so as to make your voice to be heard on high.
Is this the fast that I have chosen? A day for a man to afflict his soul? Is it to bow down his head like a reed, and to spread sackcloth and ashes under him? Will you call this a fast, and an acceptable day to Yahweh?
"Isn't this the fast that I have chosen: to release the bonds of wickedness, to undo the straps of the yoke, to let the oppressed go free, and that you break every yoke?
Isn't it to distribute your bread to the hungry, and that you bring the poor who are cast out to your house? When you see the naked, that you cover him; and that you not hide yourself from your own flesh?
Then your light will break out as the morning, and your healing will appear quickly; and your righteousness will go before you. Yahweh's glory will be your rear guard.
Then you will call, and Yahweh will answer. You will cry for help, and he will say, 'Here I am.' "If you take away from among you the yoke, the pointing of the finger, and speaking wickedly;
and if you pour out your soul to the hungry, and satisfy the afflicted soul, then your light will rise in darkness, and your obscurity will be as the noonday;
and Yahweh will guide you continually, and satisfy your soul in dry places, and make your bones strong. You will be like a watered garden, and like a spring of water whose waters don't fail.
Those who will be of you will build the old waste places. You will raise up the foundations of many generations. You will be called Repairer of the Breach, Restorer of Paths to Dwell in.
"If you turn away your foot from the Sabbath, from doing your pleasure on my holy day; and call the Sabbath a delight, and the holy day of Yahweh honorable; and shall honor it, not doing your own ways, nor finding your own pleasure, nor speaking your own words;
then you will delight yourself in Yahweh, and I will make you to ride on the high places of the earth, and I will feed you with the heritage of Jacob your father;" for Yahweh's mouth has spoken it.