Judges 13:21

13:21 The Lord’s messenger did not appear again to Manoah and his wife. After all this happened Manoah realized that the visitor had been the Lord’s messenger.

Judges 16:20

16:20 She said, “The Philistines are here, Samson!” He woke up and thought, “I will do as I did before and shake myself free.” But he did not realize that the Lord had left him.