Hebrews 10:29-31

29 How much worse punishment do you think will be deserved by those who have spurned the Son of God, profaned the blood of the covenant by which they were sanctified, and outraged the Spirit of grace?
30 For we know the one who said, "Vengeance is mine, I will repay." And again, "The Lord will judge his people."
31 It is a fearful thing to fall into the hands of the living God.
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.