From the Confessing the Faith Conference 2026, this session addresses two interrelated questions arising from the Reformed doctrine of God's eternal decree: whether God is the author of sin, and whether the sins of believers work together for their good. Working from 2LCF 3.1 and Romans 8:28, the lecture defends the confession's careful qualification that God decrees whatsoever comes to pass, yet is neither the author of sin nor in fellowship with it, while the freedom of second causes and the moral culpability of creatures are fully preserved. Main points: - God is not the author of sin: the confession's qualification of the decree and its theological grounds - the distinction between God's decree and God's moral agency — how creaturely freedom and divine sovereignty are reconciled - does my sin work out for my good? Romans 8:28 and the believer's confidence under the decree Scripture references: - Genesis 50:20 - Acts 2:23; 4:27-28 - Romans 8:28 - Romans 9:19-21