Gen 13, 8 We are kinsmen

Genesis 13 (chosen pages)

(Gen 13, 8) We are kinsmen

[8] So Abram said to Lot: "Let there be no strife between you and me, or between your herdsmen and mine, for we are kinsmen.

(CCC 500) Against this doctrine the objection is sometimes raised that the Bible mentions brothers and sisters of Jesus (Cf. Mk 3:31-35; 6:3; 1 Cor 9:5; Gal 1:19). The Church has always understood these passages as not referring to other children of the Virgin Mary. In fact James and Joseph, "brothers of Jesus", are the sons of another Mary, a disciple of Christ, whom St. Matthew significantly calls "the other Mary" (Mt 13:55; 28:1; cf. Mt 27:56). They are close relations of Jesus, according to an Old Testament expression (Cf. Gen 13:8; 14:16; 29:15; etc.).