And the Lord spake unto Moses and unto Aaron After he had given them their commission, and instructions to go to Pharaoh, and a little before they went in to him:
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And Moses and Aaron did as the LORD commanded them, so did they.
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And Moses was fourscore years old, and Aaron fourscore and three years old, when they spake unto Pharaoh.
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And the LORD spake unto Moses and unto Aaron, saying,
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When Pharaoh shall speak unto you, saying, Shew a miracle for you: then thou shalt say unto Aaron, Take thy rod, and cast it before Pharaoh, and it shall become a serpent.
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And Moses and Aaron went in unto Pharaoh, and they did so as the LORD had commanded: and Aaron cast down his rod before Pharaoh, and before his servants, and it became a serpent.