Revivalism is increased spiritual interest or renewal in the life of a church congregation or society, with a local, national or global effect. This should be distinguished from the use of the term "revival" to refer to an evangelistic meeting or series of meetings (see Revival meeting).
Revivals are seen as the restoration of the church itself to a vital and fervent relationship with God after a period of moral decline. Mass conversions of non-believers are viewed by church leaders as having positive moral effects.
Within Christian studies the concept of revival is derived from biblical narratives of national decline and restoration during the history of the Israelites. In particular, narrative accounts of the Kingdoms of Israel and Judah emphasise periods of national decline and revival associated with the rule of various righteous and wicked kings. Josiah is notable within this biblical narrative as a figure who reinstituted temple worship of Yahweh while destroying pagan worship. Within modern Church history, church historians have identified and debated the effects of various national revivals within the history of the USA and other countries. During the 18th and 19th centuries American society experienced a number of "Awakenings" around the years 1727, 1792, 1830, 1857 and 1882. More recent revivals in the 20th century include those of the 1904–1905 Welsh Revival, 1906 (Azusa Street Revival), 1930s (Balokole), 1970s (Jesus people), 1971 Bario Revival and 1909 Chile Revival which spread in the Americas, Africa, and Asia among Protestants and Catholics.
The Bible narrative records a number of revivals within the history of the Israelites. In particular, following the development of temple worship based in Jerusalem the Bible records periods of national decline and revival associated with the rule of righteous and wicked kings. Within this historical narrative the reign of Josiah epitomises the effect of revival on Israelite society in reinstituting temple worship of Yahweh and the rejection of pagan worship and idolatry. Other Jewish narratives such as the accounts of the Maccabean revolt in like manner record national revival characterised by the rejection of pagan worship practices and the military defeat and expulsion of idolatrous foreign powers.