This volume brings together four classic expressions of the doctrine of justification as it was defined, expounded, preached, confessed, and sung within the historic Particular Baptist tradition connected to the Metropolitan Tabernacle. Rather than presenting a single perspective, this collection allows the reader to see justification from multiple complementary angles—systematic theology, biblical exegesis, pulpit proclamation, confessional statement, and congregational praise—reflecting how the doctrine functioned in one of the most well-known historic churches in London. Together, these works form a unified testimony to justification as a forensic act of God, grounded in the righteousness of Christ, received by grace through faith alone, and resulting in peace with God. This edition is newly typeset and arranged for clarity and consistency. No claim is made to original authorship of the included works.