Isaiah 19:21 And the LORD shall be known to Egypt, And the Egyptians shall know the LORD in that day, And shall do sacrifice and oblation; Yea, they shall vow a vow unto the LORD, and perform it.
Egypt has long worshipped false gods. God will one day do a work that will cause Egypt to know that He is God. They will even begin to worship Him.
When you step out as a missionary you can know that God is going to do a work through you. He is at work all over this world. Even Egypt will one day be turning to Him!