Protestantism

===Five solae===
{{Main|Five solae}}
The Five ''{{lang|la|solae}}'' are five [[Latin]] phrases (or slogans) that emerged during the [[Protestant Reformation]] and summarize the reformers' basic differences in theological beliefs in opposition to the teaching of the [[Catholic Church]] of the day. The Latin word ''{{lang|la|sola}}'' means "alone", "only", or "single".

The use of the phrases as summaries of teaching emerged over time during the Reformation, based on the overarching Lutheran and Reformed principle of ''{{lang|la|[[sola scriptura]]}}'' (by scripture alone).<ref name="WELS2014"/> This idea contains the four main doctrines on the Bible: that its teaching is needed for salvation (necessity); that all the doctrine necessary for salvation comes from the Bible alone (sufficiency); that everything taught in the Bible is correct (inerrancy); and that, by the Holy Spirit overcoming sin, believers may read and understand truth from the Bible itself, though understanding is difficult, so the means used to guide individual believers to the true teaching is often mutual discussion within the church (clarity).

The necessity and inerrancy were well-established ideas, garnering little criticism, though they later came under debate from outside during the [[Age of Enlightenment|Enlightenment]]. The most contentious idea at the time though was the notion that anyone could simply pick up the Bible and learn enough to gain salvation. Though the reformers were concerned with [[ecclesiology]] (the doctrine of how the church as a body works), they had a different understanding of the process in which truths in scripture were applied to life of believers, compared to the Catholics' idea that certain people within the church, or ideas that were old enough, had a special status in giving understanding of the text.

The second main principle, ''{{lang|la|[[sola fide]]}}'' (by faith alone), states that faith in Christ is sufficient alone for eternal salvation and justification. Though argued from scripture, and hence logically consequent to ''{{lang|la|sola scriptura}}'', this is the guiding principle of the work of Luther and the later reformers. Because ''{{lang|la|sola scriptura}}'' placed the Bible as the only source of teaching, ''{{lang|la|sola fide}}'' epitomizes the main thrust of the teaching the reformers wanted to get back to, namely the direct, close, personal connection between Christ and the believer, hence the reformers' contention that their work was Christocentric.

The other solas, as statements, emerged later, but the thinking they represent was also part of the early Reformation.
* ''{{lang|la|[[Solus Christus]]}}'': ''Christ alone''
: The Protestants characterize the dogma concerning the Pope as Christ's representative head of the Church on earth, the concept of works made meritorious by Christ, and the Catholic idea of a treasury of the merits of Christ and his saints, as a denial that Christ is the ''only'' mediator between [[God]] and man. Catholics, on the other hand, maintained the traditional understanding of Judaism on these questions, and appealed to the universal consensus of Christian tradition.<ref>{{Bibleref2|Matt.|16:18}}, {{Bibleref2|1Cor.|3:11||1 Cor. 3:11}}, {{Bibleref2|Eph.|2:20}}, {{Bibleref2|1Pet.|2:5–6||1 Pet. 2:5–6}}, {{Bibleref2|Rev.|21:14}}</ref>
* ''{{lang|la|[[Sola Gratia]]}}'': ''Grace alone''
: Protestants perceived Catholic salvation to be dependent upon the grace of God and the merits of one's own works. The reformers posited that salvation is a gift of God (i.e., God's act of free grace), dispensed by the Holy Spirit owing to the redemptive work of Jesus Christ alone. Consequently, they argued that a sinner is not accepted by God on account of the change wrought in the believer by God's grace, and that the believer is accepted without regard for the merit of his works, for no one ''deserves'' salvation.<ref>{{bibleverse|Matt.|7:21}}</ref>
* ''{{lang|la|[[Soli Deo Gloria]]}}'': ''Glory to God alone''
: All glory is due to God alone since salvation is accomplished solely through his will and action—not only the gift of the all-sufficient [[Atonement in Christianity|atonement]] of [[Jesus]] on [[Christian cross|the cross]] but also the gift of faith in that atonement, created in the heart of the believer by the [[Holy Spirit]]. The reformers believed that human beings—even saints [[canonization|canonized]] by the Catholic Church, the popes, and the ecclesiastical hierarchy—are not worthy of the glory.