When Pharaoh hears this, he believes and accepts Joseph’s interpretation, and he also believes the dream is truly a message from God to warn him about future events. It is a Gentile who believes.
Joseph had come to Egypt aged seventeen and he is now thirty. He has had thirteen years of training in the Lord’s school of hardship. We learn that God gives particularly rigorous training to those he calls to the highest and most difficult tasks, and he does not use a novice, or someone who has not been adequately prepared for such service. Joseph was not going to be distracted from his service to God because of the sudden privileges he was given, or the luxury with which he was now surrounded. We go through this life with all kinds of knocks and problems and difficulties, sometimes to reprove us, and sometimes it's the loving hand of God training us.
In Luke 24 Christ expounded from the Book of Moses the resurrection, and in Acts 26 the apostle Paul does the same. Christ is in the Book of Moses, pre-eminently here in the life of Joseph. Where is the resurrection? There's no resurrection in the Book of Moses, the Pentateuch, except here in the life of Joseph. In the life of Joseph, there are three resurrections. Resurrection to life from the pit, resurrection from slavery, the household of Potiphar, resurrection from the dungeon of Pharaoh, and there is a fourth picture of resurrection in the instructions Joseph gave to carry his bones up out of Egypt when the children of Israel left at the time of the exodus (Genesis 50:25).
In all this Joseph would have seen the hand of God, and would have watched with wonder as the pieces began to fall into place for the fulfilment of his dream. He learnt that there is nothing God cannot do. His dream is in a sense governing and defining his whole life, and all that happens to him gets related back to it. So it is with the believer who has received a heavenly calling. He does not understand all that happens to him, but he can see some of the ways in which God is bringing about his perfect will in his life.
Joseph was as far as we know, the sole possessor of spiritual light in Egypt. You may be the only one in your family, school, office, to believe in Christ. You learn how you deploy your faith wisely. You may be the only one those people will ever have contact with who can bring them the message of salvation.