here and here) and it has its own IMDb page, but otherwise there is not a lot of coverage of the film online or in the literature.
It has never been released on DVD (ignore the link on the IMDb page -- it's to something else) but it is still possible to get hold of it second hand on VHS -- and I've just ordered a copy. I'll report back once I've received it and watched it.
There are several features of interest. One is that it features John Rhys-Davies who is playing Annas in the forthcoming Killing Jesus. Another is that Leo McKern plays Herod the Great. I loved McKern as "Number 2" in three episodes of The Prisoner in 1967, though he became more famous for playing Rumpole of the Bailey. Another great British character actor, Freddie Jones, is also in the cast.
There is a trailer online, one that advertises the video at a whopping $59.99, and this several decades ago!
There is also this great seven second preview from ABC in 1978: