How do we know that Christians should strive for unity?

In Ephesians 4:3, Paul calls Christians to endeavor to keep the unity of the Spirit in the bond of peace, emphasizing that unity is essential for the health of the church. This striving involves humility, patience, and love, ensuring that our actions do not disrupt the communal life of the body of Christ. The unity mentioned is not merely a superficial agreement but a deep-rooted connection grounded in our shared faith and the transformative work of the Holy Spirit. By fostering unity, we reflect the oneness of God in the Trinity, which is fundamental to our witness to the world.