Deuteronomy 2:31

And Jehovah will say to me, See, I began to give before thee Sihon and his land: begin and possess to inherit his land.

Deuteronomy 1:8

See, I gave the land before you: go in and possess the land which Jehovah sware to your fathers, to Abraham to Isaak and to Jacob, to give to them and to their seed after them.

Deuteronomy 2:24

Rise ye up, remove and pass through the torrent Arnon: see, I gave into thy hand Sihon, king of Heshbon, the Amorite, and his land: begin and possess and thou shalt contend with him in war.

Treasury of Scripture Knowledge

Summary

And the LORD said unto me, Behold, I have begun to give Sihon and his land before thee: begin to possess, that thou mayest inherit his land.

Bible References

Give sihon

Deuteronomy 2:24
Rise ye up, remove and pass through the torrent Arnon: see, I gave into thy hand Sihon, king of Heshbon, the Amorite, and his land: begin and possess and thou shalt contend with him in war.
Deuteronomy 1:8
See, I gave the land before you: go in and possess the land which Jehovah sware to your fathers, to Abraham to Isaak and to Jacob, to give to them and to their seed after them.