Rodriguez’ <Understanding of the Sabbath> taken to full consequence

Rodriguez, Angel Manuel. „The Adventist Understanding of the Law and the Sabbath“. in: Lutherans and Adventists in Conversation, 116,

"Adventists have emphasized the Sabbath commandment simply because it has been neglected by the Christian community. This should not be interpreted as a legalistic concern. To look at the Sabbath through the lenses of legalism is to forget that it is not just a memorial of creation but particularly a memorial of redemption. Keeping the Sabbath holy every week reminds believers that God is to be worshiped as Creator and that salvation is not the result of their works but of their rest in Christ. The Sabbath is about the gospel, not about the law. Obedience to the law and the Sabbath in Adventist theology is not instrumental in salvation, but always and exclusively evidential."

Being <<particularly a memorial of redemption the Sabbath is exclusively evidential>>, OF WHAT?