As God’s messenger, Benjamin had no prerogative other than to deliver the message he has received. The principle applies alike to all to whom the message is given.
“It becometh every man who hath been warned to warn his neighbor. Therefore, they are left without excuse, and their sins are upon their own heads.” (D&C 88:81-82.)
Should the messenger fail to deliver the message, he then assumes a responsibility for the sins of those who went unwarned because he was derelict in his duty. (See 2 Nephi 9:44; Jacob 1:19.)