Joshua 1:17 (CSB) "We will obey you, just as we obeyed Moses in everything. Certainly the LORD your God will be with you, as he was with Moses.

God had already told Joshua that He would be with him as He was with Moses (Joshua 1:5, Deuteronomy 31:6). Now the people recognize that God is indeed with Joshua as He was with Moses. Joshua had been given the Holy Spirit when Moses laid his hands on Joshua. Deuteronomy 34:9 says that Joshua received the Spirit of Wisdom. Words of wisdom is one of the gifts of the Holy Spirit (1 Corinthians 12:1-11). Anyone of us who lacks wisdom we can ask God and He will send the Holy Spirit with wisdom (James 1:5). Stephen was filled with the Holy Spirit and spoke with such wisdom that the members of the church could not stand up against what he was saying trough the Holy Spirit (Acts 6:8-10). So as God was with Moses, Joshua, and Steven He will be with us in all things. Matthew 28:18-20 (CSB) 18 Jesus came near and said to them, "All authority has been given to me in heaven and on earth. 19 "Go, therefore, and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, 20 "teaching them to observe everything I have commanded you. And remember, I am with you always, to the end of the age."