Dear brethren, we come back to the old truth--all a man's hope of, and effort after, reformation and self-improvement must begin with the consciousness of sin, the lament over it, the longing for divine goodness, the opening of the heart for the reception thereof; and only then can we rise to these serene heights of purity of heart. This, and this alone, is the way by which 'a clean thing' can be brought 'out of an unclean one.' and men stained and foul with evil, and bound under the chains of that which is the mother of all evil, the undue making themselves the centres of their lives, can be washed and cleansed and emancipated, and God be made the end and the aim, the motive and the goal, the power and the reward, of all their work. Righteousness is a gift to begin with, and it is a gift bestowed on condition of 'repentance toward God, and faith in our Lord Jesus Christ.' We all have longings after purity, suppressed, dashed, contradicted a thousand times in our lives day by day, but there they are; and the only way by which they can be fully satisfied is when we go with our foul hands, empty as well as foul, and lift them up to God, and say, 'Give what Thou commandest, even the clean heart, and we shall be clean.'
But then, do not let us forget, either, that this gift bestowed not once and for ever, but continuously if there be continuous desire, is to be utilised, appropriated, worked into our characters, and worked out in our lives, by our own efforts, as well as by our own faith. 'Having, therefore, these promises, dearly beloved, let us cleanse ourselves from all filthiniess of flesh and spirit, perfecting holiness in the fear of the Lord.' 'Every man that hath this' gift bestowed, 'purifieth _himself_ even as He is pure.' He that brings to us the gift of regeneration, by which we receive the new nature which is free from sin, calls to each of us as He presents to us the basin with the cleansing water, 'Wash you, make you clean; put away the evil of your doings; ... cease to do evil, learn to do well.' 'What God hath joined together let not man put asunder,' viz. the act of faith by which we receive, the act of diligence by which we use, the purifying power.
II. Note how the pure heart sees God.
One is tempted to plunge into mystical depths when speaking upon such a text as this, but I wish to resist the temptation now, and to deal with it in a plain, practical fashion. Of course I need not remind you, or do more than simply remind you, that the matter in question here is no perception by sense of Him who is invisible, nor is it, either, an adequate and direct knowledge and comprehension of Him who is infinite, and whom a man can no more comprehend than he can stretch his short arms round the flaming orb of the central sun. But still, there is a relation to God possible for sinful men when they have been purified through the faith that is in Jesus Christ, which is so direct, so immediate, that it deserves the name of vision; and which, as I believe, is the ground of a firmer certitude, and of a no less clear apprehension, than is the sense from which the name is borrowed. For the illusions of sense have no place in the sight which the pure heart has of its Father, God.
Only, remember that here, and in the interpretation of all such Scriptural words, we have ever to be guided and governed by the great principle which our Lord laid down, under very solemn circumstances, when He said: 'He that hath seen Me hath seen the Father.' Jesus Christ, whose name from eternity is the Word, is, from eternity to eternity, that which the name indicates--viz. the revealing activity of the eternal God. And, as I believe, wherever there have been kindled in men's hearts, either by the contemplation of nature and providence, or by the intuitions of their own spirits, any glints or glimpses of a God, there has been the operation of 'the Light that lighteth every man that cometh into the world.' And far beyond the limits of historical Revelation within Israel, as recorded in Scripture, that Eternal Word has been unveiling, as men's dim eyes were capable of perceiving it, the light of the knowledge of the glory of God. But for us who stand in the full blaze of that historical manifestation in the character and work of Jesus Christ our Saviour, our vision of God is neither more nor less than the apprehension and the realisation of Christ as 'God manifest in the flesh.'