Homosexuality is explicitly forbidden in the Torah. Christianity reads from the Jewish biblical source text. It is clearly and explicity defined as a cardinal sin.
The behavior of these individuals of Jewish ancestry is the antithesis of what a Jewish role model would be. If this duo really wants to help the land of Israel in the most meaningful way they can, they would first and foremost rethink their behavior as Jews. Engaging in homosexuality is a formula for disaster.
Leviticus: 22 Thou shalt not lie with mankind, as with womankind; it is abomination.
23 And thou shalt not lie with any beast to defile thyself therewith; neither shall any woman stand before a beast, to lie down thereto; it is perversion.
24 Defile not ye yourselves in any of these things; for in all these the nations are defiled, which I cast out from before you.
25 And the land was defiled, therefore I did visit the iniquity thereof upon it, and the land vomited out her inhabitants.
. 26 Ye therefore shall keep My statutes and Mine ordinances, and shall not do any of these abominations; neither the home-born, nor the stranger that sojourneth among you—
27 for all these abominations have the men of the land done, that were before you, and the land is defiled—
28 that the land vomit not you out also, when ye defile it, as it vomited out the nation that was before you.
29 For whosoever shall do any of these abominations, even the souls that do them shall be cut off from among their people.
Therefore shall ye keep My charge, that ye do not any of these abominable customs, which were done before you, and that ye defile not yourselves therein: I am the LORD your God. {P}
Bible - Leviticus -