O Jehovah! make me to know thy ways. By the ways of the Lord, David sometimes means, as we have seen in another place, the happy and prosperous issue of affairs, but more frequently he uses this expression to denote the rule of a holy and righteous life. As the term truth occurs in the immediately following verse, the prayer which he offers up in this place is, in my opinion, to this effect: Lord, keep thy servant in the firm persuasion of thy promises, and do not suffer him to turn aside to the right hand or to the left. When our minds are thus composed to patience, we undertake nothing rashly or by improper means, but depend wholly upon the providence of God. Accordingly, in this place David desires not merely to be directed by the Spirit of God, lest he should err from the right way, but also that God would clearly manifest to him his truth and faithfulness in the promises of his word, that he might live in peace before him, and be free from all impatience. If any one would rather take the words in a general sense, as if David committed himself wholly to God to be governed by him, I do not object to it. As, however, I think it probable, that, under the name of truth in the next verse, he explains what he means by the ways and paths of God, of which he here speaks, I have no hesitation in referring the prayer to this circumstance, namely, that David, afraid of yielding to the feeling of impatience, or the desire of revenge, or some extravagant and unlawful impulse, asks that the promises of God may be deeply impressed and engraven on his heart. For I have said before, that as long as this thought prevails in our minds, that God takes care of us, it is the best and most powerful means for resisting temptations. If, however, by the ways and paths of God, any would rather understand his doctrine, I, nevertheless, still hold this as a settled point, that in the language of the Psalmist there is an allusion to those sudden and irregular emotions which arise in our minds when we are tossed by adversity, and by which we are precipitated into the devious and deceitful paths of error, till they are in due time subdued or allayed by the word of God. Thus the meaning is, Whatever may happen, suffer me not, O Lord, to fall from thy ways, or to be carried away by a wilful disobedience to thy authority, or any other sinful desire; but rather let thy truth preserve me in a state of quiet repose and peace, by an humble submission to it. Moreover, although he frequently repeats the same thing, asking that God would make him to know his ways, and teach him in them, and lead him in his truth, there is no redundancy in these forms of speech. Our adversities are often like mists which darken the eyes; and every one knows from his own experience how difficult a thing it is, while these clouds of darkness continue, to discern in what way we ought to walk. But if David, so distinguished a prophet and endued with so much wisdom, stood in need of divine instruction, what shall become of us if, in our afflictions, God dispel not from our minds those clouds of darkness which prevent us from seeing his light? As often, then, as any temptation may assail us, we ought always to pray that God would make the light of his truth to shine upon us, lest, by having recourse to sinful devices, we should go astray, and wander into devious and forbidden paths. At the same time, we ought to observe the argument which David here employs to enforce his prayer. By calling God the God of his salvation, he does so in order to strengthen his hope in God for the future, from a consideration of the benefits which he had already received from him; and then he repeats the testimony of his confidence towards God. Thus the first part of the argument is taken from the nature of God himself, and the duty which, as it were, belongs to him; that is to say, because he engages to maintain the welfare of the godly, and aids them in their necessities, on this ground, that he will continue to manifest the same favor towards them even to the end. But as it is necessary that our confidence in God should correspond to his great goodness towards us, David alleges it, at the same time, in connection with a declaration of his perseverance. For, by the expression all the day, or every day, he signifies that with a fixed and untiring constancy he depended upon God alone. And, doubtless, it is the property of faith always to look to God, even in the most trying circumstances, and patiently to wait for the aid which he has promised. That the recollection of the divine blessings may nourish and sustain our hope, let us learn to reflect upon the goodness which God has already manifested towards us, as we see that David did in making this the ground of his confidence, that he had found in his own personal experience God to be the author of salvation.

Show me thy ways, O Lord - The "ways" of God are His methods of administering the affairs of the world; His dispensations; the rules which He has prescribed for Himself in the execution of His plans; the great laws by which He governs the universe. Deuteronomy 32:4, "all his ways are judgment; a God of truth and without iniquity, just and right is he." The prayer of the psalmist is, that he may be able to understand the methods of the divine government; the principles upon which God bestows happiness and salvation; the rules which He has been pleased to prescribe for human conduct; the arrangements by which He confers favors upon mankind; the scheme by which He saves people. The idea evidently is that he might understand so much of this as to regulate his own conduct aright; that he might not lean upon his own understanding, or trust to His own guidance, but that He might always be under the guidance and direction of God.
Teach me thy paths - The paths which thou dost take; to wit, as before, in administering the affairs of the world. The prayer is expressive of a desire to be wholly under the direction of God.

Show me thy ways - The psalmist wishes to know God's way, to be taught his path, and to be led into his truth. He cannot discern this way unless God show it; he cannot learn the path unless God teach it; and he cannot walk in God's truth unless God lead him: and even then, unless God continue to teach, he shall never fully learn the lessons of his salvation; therefore he adds, "Lead me in thy truth, and teach me;" Psalm 25:5.
That he may get this showing, teaching, and leading, he comes to God, as the "God of his salvation;" and that he may not lose his labor, he "waits on him all the day." Many lose the benefit of their earnest prayers, because they do not persevere in them. They pray for a time; get remiss or discouraged; restrain prayer; and thus lose all that was already wrought for and in them.

(c) Shew me thy ways, O LORD; teach me thy paths.
(c) Retain me in the faith of your promise that I swore not on any side.

Show me thy ways, O Lord,.... Either those which the Lord himself took and walked in; as those of creation and providence, in which he has displayed his power, wisdom, and goodness; and which are desirable to be known by his people, and require divine instruction and direction; and particularly his ways of grace, mercy, and truth, and the methods he has taken for the salvation of his people, both in eternity and in time; or those ways which he orders and directs his people to walk in; namely, the paths of duty, the ways of his worship and ordinances; a greater knowledge of which good men desire to have, as well as more grace to enable them to walk more closely and constantly in them;
teach me thy paths; a petition the same with the other, in different words.

On the ground of former favor, he invokes divine guidance, according to God's gracious ways of dealing and faithfulness.

Recognising the infamy of such black ingratitude, he prays for instruction as to the ways which he must take according to the precepts of God (Psalm 18:22). The will of God, it is true, lies before us in God's written word, but the expounder required for the right understanding of that word is God Himself. He prays Him for knowledge; but in order to make what he knows a perfect and living reality, he still further needs the grace of God, viz., both His enlightening and also His guiding grace.

Teach - Teach me my duty, and cause me to keep close to it, notwithstanding all temptations.