It is instructive to observe how long this matter of obtaining an heir for Abram occupies the stage of sacred history and in how many aspects it is shown. The stage is rapidly cleared of whatever else might naturally have invited attention, and interest is concentrated on the heir that is to be. The risks run by the appointed mother, the doubts of the father, the surrender now of the mother's rights,--all this is trivial if it concerned only one household, important only when you view it as significant for the race. It was thus men were taught thoughtfully to brood upon the future and to believe that, though Divine, blessing and salvation would spring from earth: man was to co-operate with God, to recognise himself as capable of uniting with God in the highest of all purposes. At the same time, this long and continually deferred expectation of Abram was the simple means adopted by God to convince men once for all that the promised seed is not of nature but of grace, that it is God who sends all effectual and determining blessing, and that we must learn to adapt ourselves to His ways and wait upon Him. The first man, then, whose religious experience and growth are recorded for us at any length, has this one thing to learn, to trust God's word and wait for it. In this everything is included. But gradually it appears to us all that this is the great difficulty, to wait; to let God take His own time to bless us. It is hard to believe in God's perfect love and care when we are receiving no present comfort or peace; hard to believe we shall indeed be sanctified when we seem to be abandoned to sinful habit; hard to pass all through life with some pain, or some crushing trouble, or some harassing anxiety, or some unsatisfied craving. It is easy to start with faith, most trying to endure patiently to the end. It is thus God educates His children. Compelled to wait for some crowning gift, we cannot but study God's ways. It is thus we are forced to look below the surface of life to its hidden meanings and to construe God's dealings with ourselves apart from the experience of other men. It is thus we are taught actually to loosen our hold of things temporal and to lay hold on what is spiritual and real. He who leaves himself in God's hand will one day declare that the pains and sorrows he suffered were trifling in comparison with what he has won from them.