The vision of the divine presence ever takes the form which our circumstances most require. David's then need was safety and protection. Therefore he saw the Encamping Angel; even as to Joshua the leader He appeared as the Captain of the Lord's host; and as to Isaiah, in the year that the throne of Judah was emptied by the death of the earthly king, was given the vision of the Lord sitting on a throne, the King Eternal and Immortal. So to us all His grace shapes its expression according to our wants, and the same gift is Protean in its power of transformation; being to one man wisdom, to another strength, to the solitary companionship, to the sorrowful consolation, to the glad sobering, to the thinker truth, to the worker practical force--to each his heart's desire, if the heart's delight be God. So manifold are the aspects of God's infinite sufficiency, that every soul, in every possible variety of circumstance, will find there just what will suit it. That armour fits every man who puts it on. That deep fountain is like some of those fabled springs which give forth whatsoever precious draught any thirsty lip asked. He takes the shape that our circumstances most need. Let us see that we, on our parts, use our circumstances to help us in anticipating the shapes in which God will draw near for our help. Learn, too, from this image, in which the Psalmist appropriates to himself the experience of a past generation, how we ought to feed our confidence and enlarge our hopes by all God's past dealings with men. David looks back to Jacob, and believes that the old fact is repeated in his own day. So every old story is true for us; though outward form may alter, inward substance remains the same. Mahanaim is still the name of every place where a man who loves God pitches his tent. We may be wandering, solitary, defenceless, but we are not alone. Our feeble encampment may lie open to assault, and we be all unfit to guard it, but the other camp is there too, and our enemies must force their way through it before they get at us. We are in its centre--as they put the cattle and the sick in the midst of the encampment on the prairies when they fear an assault from the Indians--because we are so weak. Jacob's experience may be ours: 'The Lord of Hosts is with us: the God of Jacob is our refuge.'