After forty years had passed, an angel appeared to him in the desert of Mount Sinai, in the flame of a burning bush. When Moses saw it, he was amazed at the sight, and when he approached to investigate, there came the voice of the Lord, ‘I am the God of your forefathers, the God of Abraham, Isaac, and Jacob.’ Moses began to tremble and did not dare to look more closely. But the Lord said to him, ‘Take the sandals off your feet, for the place where you are standing is holy ground. I have certainly seen the suffering of my people who are in Egypt and have heard their groaning, and I have come down to rescue them. Now come, I will send you to Egypt. — Acts 7:30-34
Often the Lord calls us aside from our work for a season, and bids us be still and learn ere we go forth again to minister. There is no time lost in such waiting hours.
Fleeing from his enemies, the ancient knight found that his horse needed to be re-shod. Prudence seemed to urge him on without delay, but higher wisdom taught him to halt a few minutes at the blacksmith’s forge by the way, to have the shoe replaced; and although he heard the feet of his pursuers galloping hard behind, yet he waited those minutes until his charger was refitted for his flight. And then, leaping into his saddle just as they appeared a hundred yards away, he dashed away from them with the fleetness of the wind, and knew that his halting had hastened his escape.
So often God bids us tarry ere we go, and fully recover ourselves for the next stage of the journey and work.
— Days of Heaven upon Earth, quoted in Streams in the Desert