Theophylact of Bulgaria
The inhabitants of Sodom are also brought forward as an example that unquenchable fire will encompass them. By “strange flesh” he means the male nature, since it does not serve such intercourse for begetting. Female flesh is capable of such intercourse, according to the saying of the forefather: “Bone of my bones, and flesh of my flesh” (Gen 2:23). But the flesh of a man, as I have said, is alien to such intercourse. Even female flesh, according to the laws, is each one’s own and proper flesh for one man. But when it mingles with many, it becomes strange and alien, and in defilement falls little short of male flesh.