The Catholic Church’s belief in the existence of purgatory is indeed scriptural!

First of all, it is important to understand what the Church believes purgatory is. The Catechism describes purgatory like this: “All who die in God’s grace and friendship, but still imperfectly purified, are indeed assured of their eternal salvation; but after death they undergo purification, so as to achieve the holiness necessary to enter the joy of heaven” (CCC 1030).

Note that the Church believes that purgatory is not an eternal state, but rather a state of purification before entering eternal life with God in heaven.

Scripture teaches us that nothing unclean can enter heaven (Revelation 21:27). Scripture also describes a place where a man goes and suffers loss, yet is still saved, but only through fire (1 Corinthians 3:13-15). Purgatory is this place that cleanses us of whatever impurity we have when we die, allowing us to enter into God’s presence without the stain of sin.