The Westminster Shorter Catechism in Modern English
WSC Q. 31.
What is effective calling?
ANSWER
Effective calling is the work of God’s Spirit, by which he convinces us of our sin and misery, enlightens our minds in the knowledge of Christ, and renews our wills, and so persuades and enables us to embrace Jesus Christ, freely offered to us in the gospel.
Go to Q. 31 in the WSC