From this you can infer how great is the reward of those who perform kind acts; for although Moses had many names, the name by which he is known in the Torah is the one which Batya, the daughter of Pharaoh, called him, and even God called him by no other name.
Exodus Rabbah 1:26
Rabbi Joshua of Kiknin said in the name of Rabbi Levi: The Holy One, the blessed One, said to Batya, the daughter of Pharaoh: "Moses was not your son, yet you called him your son; you, too, though you are not my daughter, yet I will call you Batya, the daughter of God."
Leviticus Rabbah 1:3