If we take part in the kingdom, there must be singleness of purpose. Purity of heart is, of course, continually taken in its narrower meaning of absence of sensual defilement and pollution. That is an important part of purity; and may I say a word about the pursuit of purity in this narrower sense? A great many people are distressed by impure temptations, and they very frequently fail to make progress with them for one reason, namely, that while they are anxious to get rid of sin in this one respect, they are not trying after goodness as a whole. Uncleanness of life and heart they dislike. It weighs upon their conscience and destroys their self-respect. But they have no similar horror of pride, or irreverence, or uncharity. People very often say that it is impossible to lead a “pure” life. The Christian minister is not pledged to deny this, if a man will not try to be religious all round, to be Christ-like altogether. For the way to get over uncleanness is, in innumerable cases, not to fight against that only, but to contend for positive holiness all round, for Christlikeness, for purity of heart in the sense in which Christ used the expression, in the sense in which in the 51st Psalm a clean heart is coupled with a “right spirit”――that is, a will set straight towards God, or simplicity of purpose. There is an old Latin proverb――“Unless the vessel is clean, whatever you pour into it turns sour.” It is so with the human will. Unless the human will is directed straight for God, whatever you put into the life of religious and moral effort has a root of bitterness and sourness in it which spoils the whole life. Our Lord means “Blessed are the single-minded,” for they, though as yet they may be far from seeing God, though as yet they may not believe a single article of the Christian Creed, yet at last shall attain the perfect vision; yes, as surely as God is true, they shall be satisfied in their every capacity for truth and beauty and goodness; they shall behold God. Any measure of true spiritual illumination, like that of Job when the Lord had answered his questionings, may be described as “seeing God;” and in this sense to see God is a necessary preliminary to repentance[31] and is requisite for spiritual endurance.[32] But in its full sense it is incompatible with any remaining dissatisfaction; it is the final goal of human efforts, the reward of those who here are content to “walk by faith, not by sight,” and it includes in perfection――what in a measure all discovery after search includes――satisfaction for the intellect, and full attainment for the will, and the ecstasy of the heart, in God as He is. VII “Blessed are the peacemakers: for they shall be called sons of God.”