15 so I went up the valley by night, examining the wall. Finally, I turned back and reentered through the Valley Gate.

Read Nehemiah 2:15 Using Other Translations

Then went I up in the night by the brook, and viewed the wall, and turned back, and entered by the gate of the valley, and so returned.
Then I went up in the night by the valley and inspected the wall, and I turned back and entered by the Valley Gate, and so returned.
So, though it was still dark, I went up the Kidron Valley instead, inspecting the wall before I turned back and entered again at the Valley Gate.