Deuteronomy 1:21
Behold, the Lord thy God hath set the land before thee: go up and possess it, as the Lord God of thy fathers hath said unto thee; fear not, neither be discouraged.
Cross-reference
In Deuteronomy 1:29, Moses immediately repeats 'Do not be in dread or afraid' within the same speech.
Deuteronomy 20:1 gives a similar command not to fear in battle, reinforcing the theme of trusting God's presence against enemies.
Numbers 13:30 shows Caleb urging the people to go up and possess the land, mirroring the same call to action and confidence.
Numbers 14:9 directly echoes 'do not fear' and adds that the Lord is with us, exactly supporting the exhortation in this verse.
Joshua 1:9 repeats the same command 'do not be dismayed' and promises God's presence, applying this charge to Joshua after Moses.
In Isaiah 41:10, the same 'fear not, be not dismayed' with God's strengthening directly reinforces this command.
In Joshua 8:1, God commands Joshua with the same 'Do not fear and do not be dismayed' for conquering Ai.
In Amos 2:10, God recalls leading Israel out of Egypt to possess the land, directly referencing this event.
Numbers 14:8 expresses Caleb and Joshua's confidence that God will give the land, reinforcing the promise behind the command not to fear.