Some people think that this to do with the curse upon Jeconiah as evidence of God 's miraculous working , saying that only by a virgin birth could Jesus have Joseph as a legal father , but avoid the curse through Jechoniah that none of his descendants would prosper and sit on the throne of David . And some point to the curse upon Jeconiah as evidence of God 's miraculous working , saying that only by a virgin birth could Jesus have Joseph as a legal father , inheriting the promises through David , while avoiding the curse through Jeconiah that none of his descendants would prosper and sit on the throne of David .