Isaiah 58:13-14

If you keep the Sabbath with care, not doing your business on my holy day; and if the Sabbath seems to you a delight, and the new moon of the Lord a thing to be honoured; and if you give respect to him by not doing your business, or going after your pleasure, or saying unholy words; Then the Lord will be your delight; and I will put you on the high places of the earth; and I will give you the heritage of Jacob your father: for the mouth of the Lord has said it.