1 Corinthians 6:9-11
Or, do you not know that evil people will not possess God's kingdom? Do not be misled: neither will sexually immoral people, nor idolaters, nor those who are sexually unfaithful to their mates, nor homosexual perverts. [Note: The Greek uses two words here, denoting both the passive and active partners in male homosexual acts].
1 Thessalonians 4:6
And none of you should violate and exploit his brother [or sister] in such a matter. For the Lord will punish people for all these things, just as we told you before and warned you.
Revelation 21:27
And there will never be anything [morally] unclean allowed to enter it, nor any person who practices disgusting behavior [i.e., probably such sins as sexual perversion], or [any person] who is a liar. But the only ones [allowed there] are those [whose names are] recorded in the Lamb's book of life.