In Christian theology, synergism refers to the cooperative effort between God and humanity in the process of salvation. Before Augustine of Hippo, synergism was almost universally endorsed. Later, it
Synergists compare God's role in salvation to Christ "standing at the door" (The Light of the World by William Holman Hunt).
Saint Peter's Basilica facade, Rome, Italy
Arminianism is a theological tradition within Protestantism that emerged in the early 17th century and is based on the ideas of the Dutch Reformed theologian Jacobus Arminius and his followers, known
Synergism
…Orthodoxy. It is also present in various Protestant denominations, such as Anabaptist churches, and is particularly prominent in those influenced by Arminian theology, such as the Methodist churches. Synergism comes from the Greek syn (with) and ergon (work) and refers to two or more sources working together…
Jacobus Arminius in a 1625 engraving by W. Swanenburgh
Theologian Sebastian Castellio, portrait by Jean-Paul Laurens (1892)
Eyk, Abraham van der (1721). Disputes Between Remonstrants and Counter-Remonstrants in 1618.
Portrait of John Goodwin by George Glover (1641)