Adam Clarke on Luke 21:19

In your patience - Rather, your perseverance, your faithful continuance in my word and doctrine. Ye will preserve your souls. Ye shall escape the Roman sword, and not one of you shall perish in the destruction of Jerusalem. Instead of κτησασθε, possess, or preserve ye, I read κτησεσθε, ye shall preserve. This reading is supported by AB-B, five others; both the Syriac, all the Arabic, Ethiopic, Vulgate, all the Itala except two, Origen, Macarius, and Tertullian.