1 Chronicles 3:17 - Albert Barnes' Notes on the Bible

Assir - Perhaps born in the captivity, and therefore so named, who either (died young, or was made a eunuch (Isaiah 39:7; compare Jeremiah 22:30). After Assir’s decease, or mutilation, the line of Solomon became extinct, and according to the principles of the Jewish law Numbers 27:8-11 the inheritance passed to the next of kin, who were Salathiel and his brethren, descendants from David by the line of Nathan. Luke in calling Salathiel “the son of Neri” Luke 3:27, gives his real, or natural, descent; since no genealogy would assign to the true son and heir of a king any inferior and private parentage. Hence, “Malchiram,” etc., i. e. not Salathiel only, but his brothers also were reckoned “sons” of Jeconiah.