It seems to me that readers sometimes make the genesis of a poem more mysterious than it is (by that I perhaps mean, think of it as something outside their own experience).
In the past I have declined to comment on my own work: because, it seems to me, a poem is what it is; because a poem is itself a definition, and to try to redefine it is to be apt to falsify it; and because the author is the person least able to consider his work objectively.
However, intention needn't enter in, and if a reader sees things in a religious way, and the work is dogmatically acceptable, then I don't see why it should not be interpreted in that way, as well as in others.