All the paths of the Lord [are] mercy and truth
By which are meant, not the paths in which the Lord would have his people walk; though these are good and gracious, right and true; his commandments are not grievous, his yoke is easy, and burden light; his ways are ways of pleasantness, and his paths, paths of peace: but rather the paths in which the Lord himself walks; not his paths of providence, though these are mercy and truth to his own people; every step he takes is in a way of goodness and kindness to them, and in truth and faithfulness to his promises; but the ways and methods he has taken towards the spiritual and eternal salvation of his people; as in his counsels and purposes, in which there is a large display of his grace and mercy; in the choice of them in Christ, as vessels of mercy, and which is of grace, and not of works; in determining to send his Son to die for them, which springs from the tender mercy of our God; in resolving to call them by his grace, and to adopt them into his family, and at last to glorify them; all which proceed from his merciful lovingkindness; and all these, his counsels of old, are faithfulness and truth, since they can never be frustrated, but are always accomplished; as also in his covenant, which springs from grace, is built upon mercy, and contains the sure mercies of David, and is ever fulfilled; the faithfulness of God is engaged to keep it, and its promises are yea and amen in Christ: and likewise the steps he has taken in Christ, the Mediator of the covenant, who is full of grace and truth; "mercy" appears in the mission of him, and redemption by him; and "truth", in fulfilling the promise of him; and both mercy and truth meet together in him: and so they do in the various blessings of grace which come by him; as particularly justification and pardon of sin, in both which there is a display of grace and mercy; and also of the truth of holiness and justice: and the mercy and truth of God appear in these paths of his,
unto such as keep his covenant and his testimonies;
by which are designed, not the covenant of works, and the precepts of the law, which are sometimes called the testimonies of God, because they testify what is his will that should be done: but these are broke, and not kept perfectly by any; nor is it any favour or high privilege to be shown this covenant and the duties of it, as is suggested of the covenant here meant, as appears from ( Psalms 25:14 ) ; wherefore the covenant of grace must be intended, which is made with Christ, and his people in him; and the "testimonies" are the promises of it, which testify of the grace, mercy, truth, and faithfulness of Gods; and the keeping of these is done by faith: faith lays hold on the covenant, its blessings and promises, and claims an interest in them, as David did, ( 2 Samuel 23:5 ) ; see ( Isaiah 56:4 Isaiah 56:6 ) ; and it keeps or retains its hold; it will not let go its hold of the covenant and its testimonies, but asserts its interest, even when things are at the worst with it; and it holds fast the rejoicing of the hope firm unto the end; and to such all the steps the Lord takes appear to be in mercy and truth.