Nehemiah 2:13-16

13And I went out by night by the valley-gate, even toward the jackal-fountain, and to the dung-gate; and I viewed the walls of Jerusalem, which were in ruins, and its gates were consumed with fire.

14And I went on to the fountain-gate, and to the king's pool; and there was no place for the beast under me to pass.

15And I went up in the night through the valley, and viewed the wall, and turned back, and entered by the valley-gate and returned.

16And the rulers did not know whither I went or what I did, for I had not as yet told it to the Jews, nor to the priests, nor to the nobles, nor to the rulers, nor to the rest that did the work.