20 Then she called, “Samson, the Philistines are upon you!” He awoke from his sleep and thought, “I’ll go out as before and shake myself free.” But he did not know that the LORD had left him.

Read Judges 16:20 Using Other Translations

And she said, The Philistines be upon thee, Samson. And he awoke out of his sleep, and said, I will go out as at other times before, and shake myself. And he wist not that the LORD was departed from him.
And she said, "The Philistines are upon you, Samson!" And he awoke from his sleep and said, "I will go out as at other times and shake myself free." But he did not know that the LORD had left him.
Then she cried out, “Samson! The Philistines have come to capture you!” When he woke up, he thought, “I will do as before and shake myself free.” But he didn’t realize the LORD had left him.