Tertullian

“ Therefore He swears by Himself, in order that you may believe God, even when He swears that there is besides Himself no other God at all. But you have yourself, O Marcion, compelled God to do this. For even so early as then were you foreseen. Hence, if He swears both in His promises and His threatenings, and thus extorts [4] faith which at first was difficult, nothing is unworthy of God which causes men to believe in God. ”

“ Pitiable are ye also, as well as the people, since you know not Christ, prefigured in the person of Moses as the deprecator of the Father, and the offerer of His own life for the salvation of the people. It is enough, however, that the nation was at the instant really given to Moses. ”