WordNet records no synonym and no antonym for elijah. It is the only member of its synset, which is common for technical, taxonomic and single-sense vocabulary — there is no other English word that means the same thing. The broader and narrower terms below are the useful relations in that case.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
a Hebrew prophet in the Old Testament who opposed the worship of idols; he was persecuted for rebuking Ahab and Jezebel (king and queen of Israel); he was taken up to heaven in a chariot of fire (circa 9th century BC)
Synonyms, antonyms and the broader and narrower relations for elijah come from Princeton University’s WordNet. Full sources and licences.