On the Feast of the Baptism of the Lord, this homily reflects on the meaning of Christian baptism through the voices of the early Church and the teaching of the Second Vatican Council. Baptism is presented as the foundation of Christian identity, naming us as sons and daughters of God, equal in dignity, and fully belonging to the Body of Christ. From this identity flows a mission, as every baptized person is sent into the world to build God’s kingdom of justice, peace, and love.