Teachings of the Prophet Joseph Smith, pg. 172; “It will be necessary here to make a few observations on the doctrine set forth in the above quotation, and it is generally supposed that sacrifice was entirely done away when the Great Sacrifice [i.e.,] the sacrifice of the Lord Jesus was offered up, and that there will be no necessity for the ordinance of sacrifice in future; but those who assert this are certainly not acquainted with the duties, privileges and authority of the Priesthood, or with the Prophets.”
Galatians 3:22; “But the scripture hath concluded all under sin, that the promise by faith of Jesus Christ might be given to them that believe.”
The people not acquainted with this type of theology are those who know Jesus. The verse Matthew 7:23 also comes to mind.