How do we know the salvation of the righteous is true?

We can affirm the truth of the salvation of the righteous through biblical revelation. Scriptures such as Luke 19:10 assert that Jesus came to seek and save the lost, and this salvation is not a mere possibility but a certainty for God’s elect, chosen before the foundation of the world (Ephesians 1:4). Furthermore, the historical event of Christ's death and resurrection not only provided the means for salvation but also signified that God is faithful to His promises. Therefore, those who trust in Christ can rest assured of their salvation, as it is grounded in God's sovereign will and unchanging nature.