The Calvinist teaches that salvation is sure for every man, woman, teenager, boy, or girl who comes to the Lord Jesus Christ. None shall be turned away (John 6:37). The Calvinist says, “In His atonement, Jesus built a bridge from the depths of my depravity to God and heaven, and, by sending His Spirit, will bring every sinner for whom the bridge was laid all the way to glory.” That statement is the essence of the gospel. God will not fail to gather in every single one of His elect. There will be no empty seats in heaven.

Joel R. Beeke, Living for God’s Glory: An Introduction to Calvinism, Loc. 1318.