An expression taken apparently from Prov. 22:28 (“Remove not the ancient landmark, which thy fathers have set” ( cf . Prov. 23:10 ; see also Deut. 19:14 ) and used by Seventh-day Adventists to describe the doctrines that have made them a distinct religious group. These doctrines are commonly understood to be those relating to the sanctuary, the three angels’ messages of Rev. 14 , the Second Advent, the millennium, death, the seventh-day Sabbath, and the Spirit of Prophecy. Among other terms used with a meaning similar to landmarks are: “waymarks,” “special points,” “pillars of our faith,” “the foundations,” “pegs,” and “pins.” In SDA thinking, the landmarks are doctrines of such vital importance that they cannot be altered without changing the nature of the SD...

From the Seventh-day Adventist Encyclopedia. Published with permission from the Review and Herald Publishing Association.