As Leviticus makes plain, the act of homosexuality is "an abomination" punishable by death. Happily one of the rabbis featured in this documentary advocates a sneaky line of defence. When one of his students admits to lustful feelings, the rabbi suggests eating figs, biting his tongue and snapping a rubber band on his wrist until the urge goes away.

Trembling Before G-d is laced with such quietly absurd moments. In pinpointing the ostracism faced by observant Orthodox Jews who also happen to be gay, film-maker Sandi Simcha DuBowski puts forward a veritable vox-pop of human suffering.

Often framed in anonymous silhouette, his talking heads recall how their elders subjected them to electroshock therapy or shipped them out to Israel on account of "there being no homosexuals there".

Ultimately DuBowski preaches a doctrine of inclusion. Even so, one can't help feeling that his subjects are always going to struggle to be reconciled with a faith that fundamentally opposes their existence. Sometimes it's better to embrace one life and drop the other. Or possibly eat a fig whenever the urge to pray descends.