Effectual Call
Effectual call is a Reformed theological term for the inward work of the Holy Spirit by which God brings the elect to saving faith. It is distinguished from the general or outward call — the gospel invitation extended to all who hear the preached word — in that the effectual call invariably accomplishes its purpose: those effectively called are regenerated, illumined to understand the gospel, and moved to respond with faith and repentance. The concept draws primarily from Romans 8:30 ("those he called, he also justified"), 1 Corinthians 1:23–24 ("to those who are called, both Jews and Greeks, Christ the power of God and the wisdom of God"), and Ephesians 1:4–5.
The Easton's entry notes that Scripture distinguishes (1) the election of individuals to privilege — as in the calling of Abraham, Isaac, and Jacob — and (2) election to eternal life. The effectual call is the means by which the eternal decree of election is applied in time. Arminian theology disputes the irresistibility of the call, holding that God's grace can be finally resisted, while Reformed theology maintains that the call produces what it announces because it is God's own power at work rather than merely an invitation awaiting human response.