Dt 31:6 "Be strong and bold, have no fear or dread of them, because it is the Lord your God who goes with you; he will not fail you or forsake you." This was part of Moses message to the Israelites before his death and as they were facing moving into the promised land without him to guide them. Moses reminded them that though things weren't going as they had thought things would or as they might have planned it would be OK. God would be with them. He would guide them and see that they were cared for.
Jos 1:5 "No one shall be able to stand against you all the days of your life. As I was with Moses, so I will be with you; I will not fail you or forsake you." Here God is speaking directly to Joshua after Moses death. Joshua is facing moving into the promised land. A new place, the place promised over 40 years earlier to the Israelites as they were leaving Egypt. The journey they took to get from one place to the other was not an easy one. It was not what they had expected as they set out with Moses. But through out that journey God never once left their side even though they wandered from him multiple times and complained even more.
Heb 13:5-6 "Keep your lives free from the love of money, and be content with what you have; for he has said, 'I will never leave you or forsake you.' So we can say with confidence, 'The Lord is my helper; I will not be afraid. What can anyone do to me?'" From a sermon at the end of the book of Hebrews. According to my study Bible this part of the sermon deals with practical instructions to the community of faith. There was also a note which led me to....
Psalm 118:6 "With the Lord on my side I do not fear. What can mortals do to me?"
All the above is good news and good advice for a new day!