1 Corinthians 5:9-10
I wrote to you in that letter that you were not to associate with fornicators;
Galatians 5:19-21
Now you know full well the doings of our lower natures. Fornication, impurity, indecency, idol-worship, sorcery;
Galatians 6:7-8
Do not deceive yourselves. God is not to be scoffed at. For whatever a man sows, that he will also reap.
Ephesians 5:5-6
For be well assured that no fornicator or immoral person and no money-grubber--or in other words idol-worshipper--has any share awaiting him in the Kingdom of Christ and of God.
Hebrews 13:4
Let marriage be held in honour among all, and let the marriage bed be unpolluted; for fornicators and adulterers God will judge.