The Book of Ephesians is a letter traditionally attributed to the Apostle Paul, written while he was in prison—likely in Rome—around AD 60–62. Paul addresses this letter to the believers in Ephesus, a major city in the Roman province of Asia, though its message is relevant to churches everywhere.

Ephesians explores what it means to be part of God’s family. Paul describes the richness of God’s grace in Christ and emphasizes the unity of all believers, regardless of background. The letter opens with sweeping statements about God’s eternal plan, spiritual blessings, and the new identity believers have in Jesus.

Key themes include unity in the church, the power of the Holy Spirit, practical Christian living, and the call to spiritual maturity. Ephesians is also well known for its teaching on relationships, spiritual gifts, and the “armor of God”—a memorable picture of standing firm in faith.