12:12-17 A burden of affliction is apt to make the Christian's hands hang down, and his knees grow feeble, to dispirit him and discourage him; but against this he must strive, that he may better run his spiritual race and course. Faith and patience enable believers to follow peace and holiness, as a man follows his calling constantly, diligently, and with pleasure. Peace with men, of all sects and parties, will be favourable to our pursuit of holiness. But peace and holiness go together; there can be not right peace without holiness. Where persons fail of having the true grace of God, corruption will prevail and break forth; beware lest any unmortified lust in the heart, which seems to be dead, should spring up, to trouble and disturb the whole body. Falling away from Christ is the fruit of preferring the delights of the flesh, to the blessing of God, and the heavenly inheritance, as Esau did. But sinners will not always have such mean thoughts of the Divine blessing and inheritance as they now have. It agrees with the profane man's disposition, to desire the blessing, yet to despise the means whereby the blessing is to be gained. But God will neither sever the means from the blessing, nor join the blessing with the satisfying of man's lusts. God's mercy and blessing were never sought carefully and not obtained.
13. Quoted from Pr 4:26, Septuagint, "Make straight paths for thy feet."
straight—that is, leading by a straight road to joy and grace (Heb 12:1, 2, 15). Cease to "halt" between Judaism and Christianity [Bengel].
paths—literally, "wheel tracks." Let your walk be so firm and so unanimous in the right direction that a plain track and "highway" may be thereby established for those who accompany and follow you, to perceive and walk in (Isa 35:8) [Alford].
that which is lame—those "weak in the faith" (Ro 14:1), having still Judaizing prejudices.
be turned out of the way—(Pr 4:27); and, so missing the way, lose the prize of "the race" (Heb 12:1).
rather he healed—Proper exercise of itself contributes to health; the habit of walking straight onward in the right way tends to healing.