Jude 1:5-7

5 Now I desire to remind you, though you were once for all fully informed, that he who saved a people out of the land of Egypt, afterward destroyed those who did not believe.
6 And the angels that did not keep their own position but left their proper dwelling have been kept by him in eternal chains in the nether gloom until the judgment of the great day;
7 just as Sodom and Gomor'rah and the surrounding cities, which likewise acted immorally and indulged in unnatural lust, serve as an example by undergoing a punishment of eternal fire.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the 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.