C. F. Keil and Franz Delitzsch on Nehemiah 6:11

Neh 6:11

Nehemiah, however, was not to be alarmed thereby, but exclaimed: Should such a man as I flee? and what man like me could go into the holy place and live? I will not go in. וחי is the perf. with Vav consecutive: that he may live. This word is ambiguous; it may mean: to save his life, or: and save his life, not, expiate such a transgression of the law with his life. Probably Nehemiah used it in the latter sense, having in mind the command, Num 18:7, that the stranger that cometh nigh shall be put to death.