'Perfect,' the Apostle here uses in opposition to the immediately following expression in the next verse, of 'children.' It therefore means not so much moral perfection as maturity or fulness of growth. So long as we fall short of the state of unity we are in the stage of immaturity. When we come to be one in faith and knowledge we have reached full-grown manhood. The existence of differences belongs to the infancy and boyhood of the Church, and as we grow one we are putting away childish things. What a contrast there is between Paul's vision here and the tendency which has been too common among Christians to magnify their differences, and to regard their obstinate adherence to these as being 'steadfastness in the faith'! How different would be the relations between the various communities into which the one body has been severed, if they all fully believed that their respective shibboleths were signs that they had not yet attained, neither were already perfect! When we began to be ashamed of these instead of glorying in them we should be beginning to grow into the maturity of our Christian life. But the Apostle speaks of 'a perfect man' in the singular and not of 'men' in the plural, as he has already described the result of the union of Jew and Gentile as being the making 'of twain one new man.' This remarkable expression sets forth, in the strongest terms, the vital unity which connects all members of the one body so closely that there is but one life in them all. There are many members, but one body. Their functions differ, but the life in them all is identical. The eye cannot say to the hand, 'I have no need of thee,' nor again the head to the feet, 'I have no need of you.' Each is necessary to the completeness of the whole, and all are necessary to make up the one body of Christ. It is His life which manifests itself in every member and which gives clearness of vision to the eye, strength and deftness to the hand. He needs us all for His work on the world and for His revelation to the world of the fulness of His life. In some parts of England there are bell-ringers who stand at a table on which are set bells, each tuned to one note, and they can perform most elaborate pieces of music by swiftly catching up and sounding each of these in the right place. All Christian souls are needed for the Master's hand to bring out the note of each in its place. In the lowest forms of life all vital functions are performed by one simple sac, and the higher the creature is in the scale the more are its organs differentiated. In the highest form of all, 'as the body is one, and hath many members, and all the members of the body, being many, are one body, so also is Christ.' III. This perfect manhood is the possession of all who are in Christ.