Does it seem a coming down from the mount to glance at one of our King's commandments, which is specially needful and applicable to this matter of our lips being kept for Him? 'Watch and pray, that ye enter not into temptation.' None of His commands clash with or supersede one another. Trusting does not supersede watching; it does but complete and effectuate it. Unwatchful trust is a delusion, and untrustful watching is in vain. Therefore let us not either wilfully or carelessly _enter_ into temptation, whether of place, or person, or topic, which has any tendency to endanger the keeping of our lips for Jesus. Let us pray that grace may be more and more poured into our lips as it was into His, so that our speech may be _alway_ with grace. May they be pure, and sweet, and lovely, even as 'His lips, like lilies, dropping sweet-smelling myrrh.' We can hardly consider the keeping of our lips without recollecting that upon them, more than all else (though not exclusively of all else), depends that greatest of our responsibilities, our influence. We have no choice in the matter; we cannot evade or avoid it; and there is no more possibility of our limiting it, or even tracing its limits, than there is of setting a bound to the far-vibrating sound-waves, or watching their flow through the invisible air. Not one sentence that passes these lips of ours but must be an invisibly prolonged influence, not dying away into silence, but living away into the words and deeds of others. The thought would not be quite so oppressive if we could know what we have done and shall be continuing to do by what we have said. But we _never_ can, as a matter of fact. We may trace it a little way, and get a glimpse of some results for good or evil; but we never can see any more of it than we can see of a shooting star flashing through the night with a momentary revelation of one step of its strange path. Even if the next instant plunges it into apparent annihilation as it strikes the atmosphere of the earth, we know that it is not really so, but that its mysterious material and force must be added to the complicated materials and forces with which it has come in contact, with a modifying power none the less real because it is beyond our ken. And this is not comparing a great thing with a small, but a small thing with a great. For what is material force compared with moral force? what are gases, and vapours, and elements, compared with souls and the eternity for which they are preparing?