John Gill Commentary Joshua 1:3

"Every place that the sole of your foot shall tread upon, to you have I given it, as I spake unto Moses." — Joshua 1:3 (ASV)

Every place that the sole of your feet shall tread upon
That is, in the land of Canaan:

that have I given unto you, as I said unto Moses :
(See Gill on Deuteronomy 11:24); though the Jews extend this to all without the land subdued by them, and even to all the countries they now tread on, and are exiles in; but the limits of what the Lord gave them are fixed in (Joshua 1:4) .