What does the Bible say about courage for believers?

In Deuteronomy 31:7-8, Moses instructs Joshua to be strong and of good courage as he leads the Israelites into the Promised Land. This call to courage is rooted in the assurance that the Lord goes before them, will be with them, and will not fail or forsake them. For believers today, this quality of courage is essential as we face trials and temptations, knowing that God upholds us through His Spirit and the redemptive work of Jesus Christ as our Joshua. By focusing on God's faithfulness and promises, we can approach life's challenges with confidence.