Exodus 2:2-4

and she became pregnant and gave birth to a son. When she saw that he was a fine child, she hid him for three months. But when she could hide him no longer, she got a papyrus basket for him and coated it with tar and pitch. Then she placed the child in it and put it among the reeds along the bank of the Nile. His sister stood at a distance to see what would happen to him.