Or HaChaim on Deuteronomy 33:28/אור החיים על דברים ל״ג:כ״ח

1 וישכן ישראל בטח, Israel dwelled in safety; when does this situation occur? When they live in isolation. The statement introduced by the words וישכן, etc., is a continuation of the previous statement ויאמר השמד, that G'd had ordered the Israelites to wipe out the Canaanites. As a result of fulfilling this instruction Israel would be assured of dwelling safely in the Holy Land.

2The additional words עין יעקב, may mean that although Israel's eyes are directed at the promise of inheriting a land flowing with milk and honey, i.e. at material considerations, this will not lead to their rejecting G'd's Torah as long as they have eliminated all the former inhabitants of the land.