However, although Byzantine art before Islam commonly depicts women with veiled heads or covered hair, it does not depict women with veiled faces. In addition, the Greek geographer Strabo, writing in the first century AD, refers to some Persian women veiling their faces;[3] and the early third-century Christian writer Tertullian clearly refers in his treatise The Veiling of Virgins to some "pagan" women of "Arabia" wearing a veil that covers not only their head but also the entire face.[4] Clement of Alexandria commends the contemporary use of face coverings.[5][6] There are also two Biblical references to the employment of covering face veils in Genesis 38.14 and Genesis 24.65, by Tamar and by Rebekah, Jacob and Abraham's daughters-in-law respectively.[7][8][9] These primary sources show that some women in Egypt, Arabia, Canaan and Persia veiled their faces long before Islam. In the case of Tamar, the Biblical text, 'When Judah saw her, he thought her to be a harlot; because she had covered her face' indicates customary, if not sacral, use of the face veil to accentuate rather than disguise her sexuality.[10]