In this verse, Paul is speaking to the elders of the church in Ephesus, expressing his deep care and concern for their spiritual well-being. He acknowledges that he will no longer be with them physically, so he entrusts them to God's protection and guidance. The 'word of his grace' refers to the message of the Gospel, which is central to Christian faith. This message is powerful, capable of strengthening believers and helping them grow in their faith. It is through this grace that believers are built up, meaning they are encouraged, strengthened, and equipped for their spiritual journey.
The 'inheritance' Paul mentions is a profound promise of eternal life and the blessings that come with being part of God's family. This inheritance is shared with all who are sanctified, those who are made holy through their faith in Christ. Sanctification is a process of being set apart for God's purposes, and it is through His grace that believers are continually transformed. This verse reassures Christians of the enduring power of God's grace to sustain them and the certainty of their spiritual inheritance, encouraging them to remain steadfast in their faith.