Josué 1:6

God exhorted Joshua on the basis of this promise (Joshua 1:5) to be "strong" and "courageous" (cf. Deuteronomy 31:6). Ownership of the land depended on God’s faithfulness, but occupation of the land depended on Israel’s faithfulness (cf. Deuteronomy 30:20).

The writer stressed two major theological points in this book: Yahweh’s faithfulness in giving Israel the Promised Land, and Yahweh’s hatred of sin. [Note: Constable, p. 103.]

"The word ’inherit’ ["possession" in the NASB] used to describe the future possession of the land, is of rich theological significance. It has subsequently become a NT term for the enjoyment of the spiritual blessings of salvation (e.g., 1 Peter 1:4)." [Note: Martin H. Woudstra, The Book of Joshua, p. 61. See Joseph C. Dillow, The Reign of the Servant Kings, pp. 43-91, for an excellent explanation of the Old and New Testament revelation concerning believers’ inheritance.]

The same Hebrew word (nahal [verb] or nahala [noun]) also appears in Deuteronomy 1:38; Deuteronomy 12:10; Joshua 11:23; Joshua 14:13; Joshua 16:4; and Joshua 17:6.