Exodus 2:10 provides the background: Pharaoh's daughter adopted Moses, giving him the title he later refused by faith.

Acts 7:21-24 expands on Moses' upbringing and his first act of identifying with his people, giving context to his refusal of Egyptian royalty.

Exodus 2:11 shows the immediate result of Moses' refusal—he went out to his suffering brethren, demonstrating his choice.

Acts 7:23 recounts Moses at 40 visiting his people — the very event underlying his refusal of Pharaoh's court.