Genesis 38:15

When Judah saw her, he thought her to be an harlot; because she had covered her face.

When Judah saw her, he thought her to be an harlot. Such a character as that which Tamar impersonated was to be found only in women without the gate of a well-ordered town (Revelation 22:15).

Because she had covered her face. His impression was founded not on the special form or style of the veil as betokening a prostitute [for tsa`iyp is applied to the veil of Rebekah (Genesis 24:65)], but to the concealment of her features, and the place where she lingered. The Septuagint adds the following clause, kai ouk epegnoo auteen, and he did not recognize her. But this reading has no authority.