Origen: The Scarlet Thread

“The sign of salvation (the scarlet thread) was given through the window because Christ, by His Incarnation, gave us the sight of the light of the godhead as it were through a window. Thus all may attain salvation by that sign which shall be found in the house of her who once was a harlot, being made clean by water and the Holy Spirit, and by the blood of our Lord and Savior Jesus Christ.”

-Origen