Here, Egypt is a picture of the world. The people of God (Israel), it was a place of slavery and monotonous toil. It also is flat and barren in many areas. But Canaan is a land of hills and valleys, the land of rain and fruitfulness, milk and honey. When you were saved, God removed you from Egypt, spiritually speaking. He put you into Canaan and said, “Enjoy all of these blessings.”
Why was Egypt glad when Israel left? One thing is sure—the Egyptians were afraid. Israel was worshipping the true God. Israel was in irritant to Egypt—like salt in the wound, like light that exposes evil. God used Israel to witness to Egypt, but it did not receive that witness.
Christians are salt and light. Sometimes we irritate people. Sometimes by our conduct we expose what is wrong. Someday we are going to be gone. It could be today. Jesus Christ might return today and take His people home to glory. No more salt. No more light. But what then? Judgement. Let’s remember that we have a job to do while we are waiting for our Lord to come.
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One of the believer’s responsibilities is to be light and salt in the world. Sometimes you affect others without being aware of it. Other times you have obvious opportunities to impact others for Christ. Ask God to use you to make a difference in someone’s life today.