What evidence indicates someone is part of the elect?

Paul indicates that the evidence of being part of the elect is manifested through a genuine faith in Christ and the resulting change in one's life. In 1 Thessalonians 1:5, he notes that the gospel came to the Thessalonians 'in power and in the Holy Spirit,' leading to their belief and transformation. Additionally, their ability to endure afflictions with joy, as mentioned in verse 6, serves as further evidence of their election. The Holy Spirit empowers believers to discern true doctrine and encourages them to follow Christ faithfully. This alignment with the teachings of Scripture, alongside a heart transformed by grace, is a key indicator of being one of God's elect.