1 Chronicles 2:13

Ver. 13-15. And Jesse begat his firstborn Eliab, and Abinadab
the second, and Shimma the third, Nathanael the fourth, Raddai
the fifth, Ozem the sixth, David the seventh.
] But Jesse had eight sons, ( 1 Samuel 16:10 1 Samuel 16:11 ) ( 17:12 ) , one of them therefore is not reckoned, either because he was by another woman, and the writer only mentions those that were of the same mother with David; this is the opinion of Aben Ezra and Kimchi; some say he was dead before David came to the kingdom; Kimchi mentions a Midrash, or exposition of theirs, according to which his name was Elihu, and was younger than David, who is mentioned in ( 1 Chronicles 27:18 ) , and Jarchi observes, that the writer, having found the pearl (David), reckons not the eighth son Elihu, though the Syriac and Arabic versions have inserted him in this order, "Elihu the seventh, David the eighth"; some take the eighth to be a grandson of Jesse, Jonathan the son of Shimea, ( 2 Samuel 21:21 ) the third son of Jesse, here called Shimma, as he is Shammah, ( 1 Samuel 16:9 ) ( 17:18 ) .