+I. Attained by the unity of an intelligent faith in Christ.+--1. _This faith must be based on knowledge._ "Till we all come in the unity of the faith, and of the knowledge of the Son of God" (ver. 13). A faith, so called, not based on knowledge is fanaticism. True faith is the result of conviction--a profound consciousness of the truth. Many reach this stage. They have heard the evidence, examined it, and are clearly persuaded of its truth; but they never get beyond that. They are like the neap tide that comes rolling in as if it would sweep everything before it; but when it arrives at a certain point, it stops, and with all the ocean at its back it never passes the mark where it is accustomed to pause. It is well to get to the neap-tide mark of conviction; but there is no salvation till the soul is carried by the full spring tide of conviction into a voluntary and complete surrender to Christ. It is weak, it is cowardly, when convinced of the right, not to do it promptly and heartily. Faith acquires its full-rounded unity when it is exercised, not on any abstract truth, but on a Person who is the living embodiment of all truth. The final object of faith is "the Son of God," and any truth is valuable only as it helps us to Him. Christ has Himself revealed the truth essential to be believed in order to salvation: He is Himself that truth. 2. _Perfect manhood is a complete Christ-likeness._--"Unto a perfect man, unto the measure of the stature of the fulness of Christ" (ver. 13). Man is so great that he is perpetually striving after a loftier ideal; nothing that has limits can satisfy him. "It is because there is an infinite in him which with all his cunning he cannot quite bury under the finite. Will the whole finance ministers and upholsterers and confectioners of modern Europe undertake in joint-stock company to make one shoeblack happy? They cannot accomplish it above an hour or two; for the shoeblack also has a soul quite other than his stomach, and would require, if you consider it for his permanent satisfaction and saturation, simply this allotment, no more and no less--God's infinite universe altogether to himself, therein to enjoy infinitely and fill every wish as fast as it arose. Try him with half a universe of an omnipotence, he sets to quarrelling with the proprietor of the other half and declares himself the most maltreated of men" (_Carlyle_). True manhood does not consist in the development of a fine physique, or a brilliant mentality, or in the pursuit of heroic ambitions. It lies in the nobleness of the soul at peace with God, seeking in all things to please Him, and to possess and exhibit the mind of Christ. The pagan hero is the warrior, the ruler, the poet, the philosopher; the Christian hero is the Christ-like man. The supreme type of manhood is Christ-likeness. The ideal is conceived by faith, and the actual is attained only by the exercise of the same grace.