God sends Moses to the Israelites to tell them that he is about to redeem them but Moses makes it clear that they might not believe him.Having perfomed the first two miracles it seems Moses goes on to perfom the last miracle which somehow seems to impress the Israelites.Moses is said to have perfomed all the miracles.
Exodus 4:8 NIV
8 Then the Lord said, “If they do not believe you or pay attention to the first sign, they may believe the second. 9 But if they do not believe these two signs or listen to you, take some water from the Nile and pour it on the dry ground. The water you take from the river will become blood on the ground.”
Yet Moses performs the same or similar miracle but Pharaoh is not impressed
Exodus 7:20-22 NIV
20 Moses and Aaron did just as the Lord had commanded. He raised his staff in the presence of Pharaoh and his officials and struck the water of the Nile, and all the water was changed into blood. 21 The fish in the Nile died, and the river smelled so bad that the Egyptians could not drink its water. Blood was everywhere in Egypt.22 But the Egyptian magicians did the same things by their secret arts, and Pharaoh’s heart became hard; he would not listen to Moses and Aaron, just as the Lord had said.
Was there something significant to the Israelites about the third miracle which made them believe?