Moses
Genesis 13:15ESV·traditional attribution

for all the land that you see I will give to you and to your offspring forever.

Matthew Henry Presbyterian @wholebiblehenry

We have here an account of a gracious visit which God paid to Abram, to confirm the promise to him and his. Observe, I. When it was that God renewed and ratified the promise: After that Lot was separated from him, that is, 1.

Commenting on Genesis 13:14-18

John Gill Reformed Baptist @doctorgill

For all the land which thou seest, to thee will I give it,.... Not only so much of it as his eye could reach, but all of it, as far as it went, which way soever he looked; and this he gave him to sojourn in now where he pleased, and for his posterity to dwell in hereafter; he gave him the title to it...

Geneva Bible Notes Reformed @genevanotes

For all the land which thou seest, to thee will I give it, and to thy seed for ever. (l) Meaning a long time, and till the coming of Christ as in and spiritually this refers to the true children of Abram born according to the promise, and not according to the flesh, which are heirs of the true land of Canaan.