Sforno on Deuteronomy 29:4/ספורנו על דברים כ״ט:ד׳

1ואולך אתכם, however, now that you have seen the vastness of His love for you and He has brought you to take possession of the lands of Sichon and Og, so that you are able to sustain yourselves by your own efforts, the time has come that you will finally possess the necessary sagacity, a heart which is knowledgeable.