And make straight paths for your feet, lest that which is lame be turned out of the way; but that it rather be healed. The ideas in this verse correspond to, and may be suggested by, those that follow in Isaiah the passage above referred to.
For there too the prophet goes on to speak, among other things, of the lame leaping, and of a way of holiness along which none should err. But the words themselves are suggested by Proverbs 4:26, αὐτὸς δὲ ὀρθὰς ποιήσει τὰς τροχιάς σου (LXX), the verb διαστρέφεσθαι having been previously used for turning out of the way.
It is observable that the words, καὶ τροχιάς, etc., are arranged so as to form an hexameter line. This may have been unintentional, but it is at any rate effective. Delitzsch remarks on it. "The duty to which the writer urges, his, readers is courageous self-recovery m Gods strength.
The tone and language are elevated accordingly, and Proverbs 4:12 is like a trumpet-blast. It need not surprise us, then, if our author here turns poet, and proceeds in heroic measures." With regard to the purport of this verse, we observe that, while the figure of running is still continued, a new idea is introduced—that of pursuing a straight course with a view to others who are to follow on the same track.
"That which is lame ( τὸ χωλόν)" denotes the weak and wavering brethren—the ἀσθενοῦντες, such as are referred to in Romans 14:1-23. and 1 Corinthians 8:1-13. The expression well suits (specially those among the Hebrew Christians who halted between two opinions—between the Church and the synagogue (cf.
1 Kings 18:21, ἕως πότε ὑμεῖς χωλανεῖτε επ ἀμφοτέραις ταῖς ἰγνύαις;). The strong in faith ought to desire and aim at the healing of such lame ones, i.e. their being strengthened in the faith, rather than expose them to the risk of apostasy by any wavering of their own.