Psalms 119:171

171. My lips shall speak praise. David now shows in another way than in the preceding verse, how high a privilege he accounted it to be admitted by God among the number of His disciples, and to profit aright in His school, by declaring that, if so privileged, he will hasten forward to render thanks to him with fluent tongue. The word נבע, naba, which he employs, is a metaphor taken from the bubbling up of fountains, and accordingly it signifies not simply to speak, but to pour forth speech copiously. As therefore he a little before showed the earnestness of his desire by praying, so now he affirms that his rejoicing will bear testimony that he desires nothing more than to be thoroughly imbued with heavenly truth. He again confirms the doctrine, That the way by which we become truly wise is, first by submitting ourselves to the Word of God, and not following our own imaginations; and, secondly, by God’s opening our understanding and subduing it to the obedience of his will. He here joins together both these truths — namely, that when God has set before us His law, from which we are to learn what, ever is profitable for our welfare, He, at the same time, teaches us inwardly. It were not enough to have our ears stricken with the outward sound, did not God illuminate our minds by the Spirit of understanding, and correct our obduracy by the Spirit of docility. As the labor of teachers is to no purpose until virtue and efficacy has been given to it, so it is also to be noticed that such as are truly taught of God, are not led away from the law and the Scriptures by secret revelations, like some fanatics, who think that they linger still at their A B C, unless disdainfully trampling under foot the Word of God, they fly away after their own foolish fancies.