3 adjectives to describe monotheist

We can appreciate more beauty, but do we appreciate any quite as much as in those old days when we were such passionate monotheists of the beautiful?

Then farther it came across me; How very remarkable it is, that the Jews, those strict Monotheists, never seem to have attacked the apostles for polytheism!

MENDELSSOHN, MOSES, a German philosopher, born at Dessau, of Jewish descent, a zealous monotheist, and wrote against Spinoza; was author of the "Phædon, a Discourse on the Immortality of the Soul," and did a great deal in his day to do away with the prejudices of the Jews and the prejudices against them; he was the friend of Lessing, and is the prototype of his "Nathan" (1720-1786).

3 adjectives to describe  monotheist