There is much disagreement over whether these "brothers" referred to here are Jesus' actual brothers or merely stepbrothers or cousins. The official Roman Catholic and Eastern Orthodox doctrine is that Mary was a perpetual virgin, and so could not have had any other children besides Jesus, thus making these Jesus' half brothers, sons of Joseph from another, unrecorded, marriage, or cousins. Only Tertullian seems to have questioned this in the early Church. Islam also holds that Mary was a perpetual virgin, as did many of the early Protestants, although many Protestants today do not hold to the doctrine of perpetual virginity, and would thus believe that these are Jesus' full brothers. A few early manuscripts also have "and your sisters" in verse .