κατὰ λόγον. These words have caused translators and commentators great difficulty, and most of them seem to have missed their significance entirely. Spitta proposes to alter by reading κατ€λογον, but the emendation is unnecessary. The remarks which he makes (p. 89 sqq.) upon the relation between this sentence and the next are, however, excellent. It was necessary to Africanus’ theory that Joseph should be allowed to trace his lineage through Jacob, his father “by nature,” as well as through Eli, his father “by law,” and hence the words κατὰ λόγον are added and emphasized. He was his son by nature and therefore “rightfully to be reckoned as his son.” This explains the Biblical quotation which follows: “Wherefore”—because he was Jacob’s son by nature and could rightfully be reckoned in his line, and not only in the line of Eli—“it is written,” &c.