Jewish Encyclopedia: Lord's Prayer: "Accordingly Jesus said: "Whensoever ye stand praying, forgive, if ye have aught against any one; that your Father also which is in heaven may forgive you your trespasses" (Mark xi. 25, R. V.). It was this precept which prompted the formula "And forgive us our sins ["ḥobot"="debts"; the equivalent of "'awonot"="sins"] as we also forgive those that have sinned ["ḥayyabim"="those that are indebted"] against us." ... On closer analysis it becomes apparent that the closing verses, Matt. vi. 14-15, refer solely to the prayer for forgiveness. Consequently the original passage was identical with Mark xi. 25; and the Lord's Prayer in its entirety is a later insertion in Matthew. Possibly the whole was taken over from the "Didache" (viii. 2), which in its original Jewish form may have contained the prayer exactly as "the disciples of John" were wont to recite it."
