Express-Statements-Only
Only what is expressly stated in Scripture binds the conscience; rejects deduction by good and necessary consequence — a Socinian and later Anabaptist tendency.
This is a contested or rejected alternative.
The Westminster baseline on Sufficiency is Express-And-Good-Consequence. Personas and schools listed below hold this alternative position instead — either because they argued for it at the Assembly (like the Erastians on polity) or because they represent a receiving tradition that departed from the Standards on this point.
Cruxes on this attribute
The Assembly navigated 1 crux that bear directly on Sufficiency.
Other positions on Sufficiency
Express-And-Good-Consequence WCF
Whatever is necessary for God's glory and human salvation is either expressly stated in Scripture, or may be deduced from it by good and necessary consequence (WCF I.6).
Scripture-And-Tradition
Scripture is sufficient only when supplemented by the unwritten apostolic tradition preserved in the church — the Tridentine position rejected by WCF I.6.