‘And the Lord said to him, “Loose the shoes from your feet, for the place on which you stand is holy ground. I have surely seen the affliction of my people who are in Egypt, and have heard their groaning, and I am come down to deliver them. And now come, I will send you into Egypt.'
God had declared that the time for deliverance had come, the time when He would save His people from affliction. Moses was to acknowledge His holiness and recognise that he was in the presence of God, and then God would send him from His presence to deliver His people.
(In the same way God's present Deliverer was in the presence of God and waited to deliver all who would call on Him - Acts 2:36; Acts 2:39).
The continued emphasis on Egypt goes on (thirteen times) and in Acts 7:39 their hearts were still in Egypt. Where was their belief in the land then?