Origin: Greek suffix -ist
Jehovist has 2 different meanings across 1 category:
One who maintains that the vowel points of the word Jehovah, in Hebrew, are the proper vowels of that word; opposed to adonist.
The writer of the passages of the Old Testament, especially those of the Pentateuch, in which the Supreme Being is styled Jehovah. See Elohist.
The word comes from combining "Jehovah" with the suffix "-ist." It originally referred to a person who believes in or worships Jehovah.