The bible doesn't "speak for itself." It needs interpretation. Claiming that the bible condemns homosexuality when the term never appears in the texts is an interpretation. And it's one that's not based on a reasonable exegesis of the texts.
Is it any more nonsense than executing two gay men? What's being condemned are sex-acts that are seen as violent or inequitable. Not the orientation of the participants.
Thousands of liberal and conservative scholars have discussed the Bible's standards on sexual mores and gender. Sex between people of the same gender is condemned in the Bible, whether it is a contrivance for straights in prison or warfare or what we moderns would call "gay and lesbian".
The reasons to execute homosexuals caught in fragrante delicto in public:
1) There is no known example when this was carried out in Bible times/Jewish literature, although male ritual prostitutes were executed by various Bible kings
2) The context includes God was literally WITH the people for 40 years and demanded holiness, and children were to be kept pure and away from the abominable practices of the nations--again, the public executions were for PUBLIC sexual practices
The result of Draconian laws prohibiting sex activity was that it drove people of many preferences to be closeted for centuries. There was lack of freedom and personal suffering that should cause us all sorrow. However, I'm in certain ways for closeting if not abolishing certain behaviors. I see a modern society that is absolutely torn to pieces by porn, sexual profligacy--our children suffer.
The single biggest indicator of future struggles for a young person? Being fatherless. I see the spiritual and moral degeneracy of ALL of us as a cause for concern. I'm not here to lie to you, on a religious basis, truth is to be shared. When I meet a homosexual who claims to be a Christian, I'm led to question the sincerity of their faith.