If a man lies with a male as with a woman, both of them have committed an abomination; they shall surely be put to death; their blood is upon them.
Leviticus 20:13

Homosexuality is disgusting to God and cannot be tolerated among a people which desires to live in God's grace. It's just as bad as incest and adultery, poisoning the land and the people. Open perversion is most definitely not a "private" matter and must be dealt with severely by a God-fearing people who wishes to remain a cohesive people.