Isaiah 58:3-5

New Revised Standard Version, Anglicised Catholic Edition

³ ‘Why do we fast, but you do not see?
    Why humble ourselves, but you do not notice?’
Look, you serve your own interest on your fast-day,
    and oppress all your workers.
⁴ Look, you fast only to quarrel and to fight
    and to strike with a wicked fist.
Such fasting as you do today
    will not make your voice heard on high.
⁵ Is such the fast that I choose,
    a day to humble oneself?
Is it to bow down the head like a bulrush,
    and to lie in sackcloth and ashes?
Will you call this a fast,
    a day acceptable to the Lord?