For what is faith other than to assent because God speaks? Therefore, unless you are persuaded that God has spoken those things that are set forth in Scripture, where will your faith rest? In turn, what is obedience other than to do what God commands? Therefore, unless you are certain that God has spoken those things which are commanded in Scripture, how will you obey? For this reason Paul in 1 Thessalonians 2:13 says, “you received it, not as the word of men but rather (as it truly is) the Word of God that also works in you who believe.”

PETRUS VAN MASTRICHT, THEORETICAL-PRACTICAL THEOLOGY, VOLUME 1: PROLEGOMENA, 348.