The Hebrew uses the metaphor of the heart' to cover a great deal more of the inward self than we are accustomed to do. We mainly mean thereby that in us which loves. But the Old Testament speaks of the thoughts and intents' as well as the affections' of the heart. And so to this Psalmist his heart' was not only that in him which loved, but that which purposed and which thought. When he says My heart is fixed' he does not merely mean that he is conscious of a steadfast love, but also and rather of a fixed and settled determination, and of an abiding communion of thought between himself and God. And he not only makes this declaration as the expression of his experience for the moment, but he mortgages the future, and in so far as any man dare, he ventures to say that this temper of entire consecration, of complete communion, of fixed resolve to cleave to God, which is his present mood, will be his future whatever may wait his outward life then. The lesson from that resolve is that our religion, if it is worth anything, must be a continuous and uniformly acting force throughout our whole lives, and not merely sporadic and spasmodic, by fits and starts. The lines that a child's unsteady and untrained hand draws in its copy-book are too good a picture of the crooked, wandering ways in which we live,' in so far as our religion is concerned. The line should be firm and straight, uniform in breadth, unvarying in direction like a sunbeam, homogeneous and equally tenacious like an iron rod. Unless it be thus strong and uniform, it will scarcely sustain the weights that it must bear, or resist the blows that it must encounter.
For a fixed heart I must have a fixed determination, and not a mere fluctuating and soon broken intention. I must have a steadfast affection, and not merely a fluttering love, that, like some butterfly, lights now on this, now on that, sweet flower, but which has a flight straight as a carrier pigeon to its cot, which shall bear me direct to God. And I must have a continuous realisation of my dependence upon God, and of God's sweet sufficiency, going with me all through the dusty day. A firm determination, a steadfast love, a constant thought, these at least are inculcated in the words of my text. My heart is fixed, O God! my heart is fixed.'
Ah, brethren! how unlike the broken, interrupted, divergent lines that we draw! Our religious moments are not knit together, and touching one upon the other, but they are like the pools in the bed of a half dried up Australian stream--a pond here, and a stretch of white, blistering pebbles there, and then a little drop of water, and then another reach of dryness. They should all be knit together by one continuous flow of a fixed love, desire, and thought. Is our average Christianity fairly represented by such words as these of my text? Do they not rather make us burn with shame when we think that a man who lived in the twilight of God's revelation, and was weighed upon by distresses such as wrung this psalm out of him, should have poured out this resolve, which we who live in the sunlight and are flooded with blessings find it hard to echo with sincerity and truth? Fixed hearts are rare amongst the Christians of this day.
