Exodus 34:11

Observe thou that which I command thee this day
Which words are either said to Moses personally, as Aben Ezra thinks, as a direction to him to observe what had been said to him, and declare them to the children of Israel; or rather to the children of Israel, and respect the commands which are afterwards delivered out to be observed by them in the following verses; and what is expressed in the next clause is such as was not done by the ministry of Moses, nor in his time:

behold, I drive out before thee;
not before Moses, but the people of Israel,

the Amorite, and the Canaanite, and the Hittite, and the
Perizzite, and the Hivite, and the Jebusite;
six nations are only mentioned, though there were seven, the Girgashites being omitted, because either they left the land before, as some think, or because they at once submitted; they are added in the Septuagint version.