Rashi on Exodus 34:24/רש"י על שמות ל״ד:כ״ד

1אוריש means as the Targum has it אתריך, I will drive out. Similar is (Deuteronomy 2:31) “Begin to drive out (רש)”; and similar is, (Numbers 21:32) “and drove out (ויורש) the Amorites” — all having the sense of expelling.

2והרחבתי את גבלך [I WILL DRIVE OUT THE NATIONS BEFORE THEE] AND ENLARGE THY BOUNDARIES — and consequently you may be far from the Chosen House (the Temple) and you will then not be able to appear before Me continually; therefore I appoint for you these three seasons.