Presbyterianism is a branch of Protestant Christianity that adheres to the Calvinist theological tradition and whose congregations are organized according to a Presbyterian polity. Presbyterian theology typically emphasizes the sovereignty of God, the authority of the Scriptures, and the necessity of grace through faith in Christ. Presbyterianism originated primarily in Scotland. Scotland ensured Presbyterian "church government" in the Acts of Union in 1707 which created the kingdom of Great Britain. In fact, most Presbyterians found in England can trace a Scottish connection, and the Presbyterian denomination was also taken to North America mostly by Scots and Scots-Irish immigrants^{[citation needed]}. The Presbyterian denominations in Scotland hold to the theology of Calvin and his immediate successors, although there is a range of theological views within contemporary Presbyterianism.

Modern Presbyterianism traces its institutional roots back to the Scottish Reformation. Local congregations are governed by Sessions made up of representatives of the congregation, a conciliar approach which is found at other levels of decision-making (Presbytery, Synod and General Assembly). Theoretically, there are no bishops in Presbyterianism; however, some groups in Eastern Europe, and in ecumenical groups, do have bishops. The office of elder is another distinctive mark of Presbyterianism: these are specially ordained non-clergy who take part in local pastoral care and decision making at all levels. The office of deacon is geared toward the care of members, their families, and the surrounding community. In some congregations active elders and deacons serve a three-year term and then rotate off for at least a year. The offices of pastor, elder, and deacon all commence with ordination; once a person is ordained, he holds that title for the rest of his life. An individual may serve as both an elder and a deacon.

The Rev. Francis Makemie (1658–1708) was an Irish clergyman, considered to be the founder of Presbyterianism in United States of America.

Charles Hodges (born Charles Edward Hodges, June 29, 1947, Memphis, Tennessee) is an American organist and songwriter. He is known for his high tone on the Hammond B3 organ, that appeared on records by Al Green, and other musicians signed to Hi Records.

Hodges also played on albums by James Carr, Willie Cobbs, Albert Collins and Boz Scaggs.

Hi Records acts Syl Johnson, O.V. Wright, as well as Green and Tom Jones, have all recorded songs written by Hodges.