Isaiah 1:20

20 but if you refuse and rebel, you shall be devoured by the sword; for the mouth of the Lord has spoken.

Isaiah 1:20 In-Context

18 Come now, let us argue it out, says the Lord: though your sins are like scarlet, they shall be like snow; though they are red like crimson, they shall become like wool.
19 If you are willing and obedient, you shall eat the good of the land;
20 but if you refuse and rebel, you shall be devoured by the sword; for the mouth of the Lord has spoken.
21 How the faithful city has become a whore! She that was full of justice, righteousness lodged in her— but now murderers!
22 Your silver has become dross, your wine is mixed with water.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.