Why is the preservation of the church important for Christians?

The preservation of the church, or the perseverance of the saints, is rooted in the faithful promises of God. As stated in John 10:28, Jesus gives eternal life to His sheep, ensuring that they will never perish. This doctrine provides comfort to believers, reassuring them that their salvation is secure. The unyielding faithfulness of God is the foundation for the believer's confidence in salvation, asserting that once a person is genuinely called and sanctified, they will be preserved by God's power until the end. This doctrine also emphasizes that those who fall away were never truly of the faith to begin with, further highlighting the reliability of God's promises.