Verses with the word region in the Old Testament (5 verses):

Deuteronomy 3:4
And we took all his cities at that time, there was not a city which we took not from them, threescore cities, all the region of Argob, the kingdom of Og in Bashan.

Deuteronomy 3:13
And the rest of Gilead, and all Bashan, being the kingdom of Og, gave I unto the half tribe of Manasseh; all the region of Argob, with all Bashan, which was called the land of giants.

1 Kings 4:11
The son of Abinadab, in all the region of Dor; which had Taphath the daughter of Solomon to wife:

1 Kings 4:13
The son of Geber, in Ramothgilead; to him pertained the towns of Jair the son of Manasseh, which are in Gilead; to him also pertained the region of Argob, which is in Bashan, threescore great cities with walls and brasen bars:

1 Kings 4:24
For he had dominion over all the region on this side the river, from Tiphsah even to Azzah, over all the kings on this side the river: and he had peace on all sides round about him.