Jamieson, Fausset and Brown on Nehemiah 2:11-12

11-12. So I came to Jerusalem, and was there three days--Deeply affected with the desolations of Jerusalem, and uncertain what course to follow, he remained three days before informing any one of the object of his mission [Ne 2:17, 18]. At the end of the third day, accompanied with a few attendants, he made, under covert of night, a secret survey of the walls and gates [Ne 2:13-15].