"See, I am sending an angel ahead of you to guard you along the way and to bring you to the place I have prepared. (Exodus 23:20)
A promise given to the Israelites as they travelled towards Canaan; the land of promise. God was sending his angel ahead of the travelling Israelites to fight for them and protect them from their enemies, but there were instructions for them concerning the angel:
Pay attention to him and listen to what he says. Do not rebel against him; he will not forgive your rebellion, since my Name is in him. If you listen carefully to what he says and do all that I say, I will be an enemy to your enemies and will oppose those who oppose you. (Exodus 23:21, 22)
"Pay attention, listen carefully to the angel and do all that God said"were the instructions. That was the Old Testament.
For us, as believers, God has given us his Holy Spirit to guide us till we enter eternity in heaven. The Counselor, the Holy Spirit, of whom Jesus said,
But the Counselor, the Holy Spirit, whom the Father will send in my name, will teach you all things and will remind you of everything I have said to you. (John 14:26)
But when he, the Spirit of truth, comes, he will guide you into all truth.... (John 16:13)
We have to pay attention and listen carefully to the Holy Spirit and obey the Word of God as detailed in the New Testament. The Holy Spirit will teach us all things through the Word and he will remind us of everything that Jesus said and he will guide us into all truth.The Holy Spirit will guard us and guide us to the place that God has prepared for us.
The question is: Are we willing to obey him?
If yes, then we can be sure that he will surely finish the work that God has begun in us. Praise the Lord.