While there are a number of passages in the OT which are taken to condemn male homosexuality (e.g. Lev 18:22, 20:13), I am not aware of any which condemn female homosexuality. It seems to me that all the Biblical arguments against female homosexuality must either rely on:
- a single NT passage, Romans 1:26-27 (is an NT passage good evidence for what the law of Moses says? - assuming this passage even is about female homosexuality), or
- more indirect arguments (e.g. Adam and Eve as an ideal which all human beings are required to conform) - the very indirectness of these arguments supports doubting them
- Traditional Judaism considers female homosexuality to be prohibited, but there is disagreement about whether this is a biblical or post-biblical prohibition (and if the prohibition is post-biblical, then it has little value for those outside of rabbinical Judaism)
So is it fair to say that female homosexuality is not prohibited by the law of Moses?