Irresistible grace (also called effectual grace,[1]effectual calling, or efficacious grace) is a doctrine in Christian theology particularly associated with Calvinism, which teaches that the saving grace of God is effectually applied to those whom he has determined to save (the elect) and, in God's timing, overcomes their resistance to obeying the call of the gospel, bringing them to faith in Christ. It is to be distinguished from prevenient grace, particularly associated with Arminianism, which teaches that the offer of salvation through grace does not act irresistibly in a purely cause-effect, deterministic method, but rather in an influence-and-response fashion that can be both freely accepted and freely denied.[2]
^Sproul, R. C. (April 15, 2017). "TULIP and Reformed Theology: Irresistible Grace". Ligonier Ministries. Archived from the original on August 5, 2021. Retrieved August 5, 2021. I have a little bit of a problem using the term irresistible grace, not because I don't believe this classical doctrine, but because it is misleading to many people. Therefore, I prefer the term effectual grace, because the irresistible grace of God effects what God intends it to effect.
^Forlines, Leroy F.; Pinson, Matthew J.; Ashby, Stephen M. (2001). The Quest for Truth: Answering Life's Inescapable Questions. Nashville: Randall House Publications. pp. 313–321.