But this is not unison: it is harmony. When an orchestra produces some great musical masterpiece, the instruments are all of one mind, but each makes its own individual contribution. There is variety with concordance: each one serves every other, and the result is glorious harmony. |By love serve one another.| It is love that converts membership into fraternity: it is love that binds sons and daughters into a family.

Look at a field of wild-flowers. What a harmony of colour! And yet what a variety of colours! Nothing out of place, but no sameness! All drawing resource from the same soil, and breathing the vitalizing substance from the same air!

|And ye, being rooted and grounded in love,| will grow up, a holy family in the Lord. If love be the common ground the varieties in God's family may be infinite!

And so the unity which the apostle seeks is a unity of mood and disposition. It is not a unity which repeats the exact syllables of a common creed, but a unity which is built of common trust, and love, and hope. It is not sameness upon the outer lips, but fellowship in the secret place.