Deuteronomy 31:6 (BSB)

Be strong and courageous; do not be afraid or terrified of them, for it is the LORD your God who goes with you; He will never leave you nor forsake you.”

From Deuteronomy 31. Also in the ESV.

Commentary on Deuteronomy 31:6

• John Calvin (Reformed), Calvin's Commentaries on Deuteronomy 31:6: 6 Be strong and of good courage. After he had shown that God would be with them, for their help, he exhorts the people to firmness and magnanimity. And surely this is one means of confirming our courage, to be assured that the assistance which God promises will suffice for us: so far is it from being the case, that our zeal and energy in...
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Deuteronomy 31:1-8: Loth to part (we say) bids oft farewell. Moses does so to the children of Israel: not because he was loth to go to God, but because he was loth to leave them, fearing that when he had left them they would leave God.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Deuteronomy 31:6: And Moses called unto Joshua,.... Who might be at some distance from him, with the tribe to which he belonged. The Targum of Jonathan adds,"out of the midst of the people:" and said unto him, in the sight of all Israel; now assembled together, and what follows was said in their hearing, to make him the more respectable to them: be strong and of a...
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on Deuteronomy 31:6: Deu 31:6 Israel was therefore to be of good courage, and not to be afraid of them (vid., Deu 1:21; Deu 20:3).