Jesus has already made it clear through His Word. He doesn't threaten the unbeliever with hell?
Leviticus 20:13 KJV
[13] If a man also lie with mankind, as he lieth with a woman, both of them have committed an abomination: they shall surely be put to death; their blood shall be upon them.
Romans 1:26-28 KJV
[26] For this cause God gave them up unto vile affections: for even their women did change the natural use into that which is against nature: [27] And likewise also the men, leaving the natural use of the woman, burned in their lust one toward another; men with men working that which is unseemly, and receiving in themselves that recompence of their error which was meet. [28] And even as they did not like to retain God in their knowledge, God gave them over to a reprobate mind, to do those things which are not convenient;
Jude 1:7-8 KJV
[7] Even as Sodom and Gomorrha, and the cities about them in like manner, giving themselves over to fornication, and going after strange flesh, are set forth for an example, suffering the vengeance of eternal fire. [8] Likewise also these filthy dreamers defile the flesh, despise dominion, and speak evil of dignities.