God's curse resulting in no royal descendants from the line of Jeconiah (a.k.a. Jehoiakin), as given by Jeremiah(Jer. 22:30), was enforced by God. Even though Jeconiah was in the line of Christ, the Messaiah was not a physical child of that line, thus affirming the curse, yet sustaining the legality of His kingship through Joseph, who was in David's line. His blood birthright came through Mary, who traced her line to David through his so Nathan, not Solomon (cf. Luke 3:31)