Deuteronomy 3:28 repeats the command to encourage Joshua and confirms his role to cause Israel to inherit the land.

Deuteronomy 31:7 records Moses charging Joshua to be strong and lead Israel into the land — fulfilling the command to encourage him.

Deuteronomy 31:8 adds God's promise to go before Joshua — directly supporting the encouragement urged in 1:38.

Deuteronomy 31:23 records God's own charge to Joshua to be strong — fulfilling the command to encourage him from 1:38.

Exodus 17:9-14 shows Joshua leading Israel's first battle, establishing his military role before succeeding Moses.

Exodus 24:13 depicts Joshua accompanying Moses up the mountain, showing his close association with Moses.

Numbers 13:16 reveals that Moses renamed Hoshea to Joshua, linking to the successor named here.

Numbers 14:30 explicitly says Joshua and Caleb will enter the land, fulfilling the promise in Deuteronomy.

Numbers 14:38 notes that only Joshua and Caleb survived the plague, underscoring God's selection of Joshua.

Numbers 26:65 confirms Joshua and Caleb as the only survivors of the first census, matching Deuteronomy's promise.

Numbers 27:18-23 describes Moses commissioning Joshua by laying on hands — the foundational appointment that 1:38 later references.

Joshua 1:1 opens with the LORD speaking to Joshua after Moses' death — showing the transition foretold in 1:38.

Joshua 1:6-9 records God's repeated command to be strong and courageous — the direct fulfillment of Moses' charge to encourage him.