Substitution

Substitution, in theology the doctrine that Christ in His obedience and death stood in the place of the sinner, so that His merits on their faith in Him are imputed to them.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Sublime Porte * Subtle Doctor
[wait for the fun]
Styx
Suakin
Suarez, Francisco
Subahdar
Subiaco
Subjective, The
Subjectivism
Sublapsarianism
Sublimation
Sublime Porte
Substitution
Subtle Doctor
Succession Wars
Suchet, Louis Gabriel, Duc d'Albufera
Suckling, Sir John
Sudarium
Sudbury
Sudetic Mountains
Sudras
Sue, Marie-Joseph-Eugène
Suetonius, Tranquillus