Spurgeon felt strongly against the doctrine that the baptism of an adult or infant can save a soul. The doctrine was found in the "Book of Common Prayer" and was practiced by the Church of England. He warned that the idea was misleading and people might go to hell because of it. Spurgeon presented certain facts which disputed the doctrine. He also outlined the correct doctrine of faith in Jesus Christ for salvation. Spurgeon called for the fiery vehemence of a John Knox or a Martin Luther to "rouse our hearts to action." The sermon was updated to modern language.