We have here a petition imbedded in a reiterated statement of the disciples' isolated position when left in a hostile world without Christ's sheltering presence. We cannot fathom the depth of the mystery of the _praying_ Christ, but we may be sure of this, that His prayers were always in harmony with the Father's will, were, in fact, the expression of that will, and were therefore promises and prophecies. What He prays the Father for His disciples He gives to His disciples. Once only had He to say, 'If it be possible'; at all other times He prayed as sure that 'Thou hearest Me always,' and in this very prayer He speaks in a tone of strange authority, when He prays for all believers in future ages, and says: 'I will that, where I am, they also may be with Me.' In this High-priestly prayer, offered when Gethsemane was almost in sight, and the Judgment Hall and Calvary were near, our Lord's tender interest in His disciples fills His mind, and even in its earlier portion, which is in form a series of petitions for Himself, it is in essence a prayer for them, whilst this central section which concerns the Apostles, and the closing section which casts the mantle of His love and care over all who hereafter shall 'believe on Me through their word,' witnesses to the sublime completeness of His self-oblivion. Gethsemane heard His prayer for Himself; here He prays for His people, and the calm serenity and confident assurance of this prayer, set against the agitation of that other, receives and gives emphasis by the contrast. Our text falls into two parts, the enclosing circle of the repeated statement of the disciples' isolation in an alien world, and the enclosed jewel of the all-sufficient prayer which guarantees their protection. We shall best make its comfort and cheer our own by dealing with these two successively. I. The disciples' isolation. Of course we are to interpret the 'world' here in accordance with the ethical usage of that term in this Gospel, according to which it means the aggregate of mankind considered as apart from and alien to God. It is roughly equivalent to the modern phrase, 'society.' With that order of things Christ's real followers are not in accord. That want of accord depends upon their accord with Jesus. Every Christian has the 'mind of Christ' in him, in the measure of his Christianity. 'It is enough for the disciple that he be as his Master' But Christian discipleship has a better guarantee for the assimilation of the disciple to his Lord than the ordinary forms of the relation of teacher and taught ever present. There is a participation in the Master's life, an implantation in the scholar's spirit of the Teacher's Spirit. 'Christ in us' is not only 'the hope of glory,' but the power which makes possible and actual the present possession of a life kindred with, because derived from, and essentially one with, His life.