That (Hebrew, לְמַעַן l'maan); in order that (Vulgate, ut), carries us back properly to Proverbs 2:11. The protecting power of wisdom is developed in a positive direction. Negatively, it delivers from the evil man and from the strange woman, but it does more—"it shall keep thee in order that thou mayest walk in a good way," etc.
The Hebrew לְמַעַן (l'maan) is coordinate with "to deliver thee," but it serves to bring the discourse to a conclusion. Umbreit renders it "therefore," thus making what follows an inference from the preceding discourse.
So the Syriac, ambula igitur, "therefore walk." In the way of good men ( בְּדֶרֶךְ טוֹבִים, b'derek tovim); i.e. in the way of the good, in an ethical sense, i.e. the upright, as in Isaiah 5:20. The Vulgate renders, in via bona, "in the good way."
"The way of good men" is the way of God's commandments, the way of obedience. Keep. The Hebrew verb שָׁמַר (shamar) is here used in the sense of "to observe," "to attend to," but in a different sense from Psalms 17:4, "I have observed the ways of the violent man," i.
e. that I might avoid them. To keep the paths of the righteous is to carefully attend to the life of obedience which they follow. The LXX. closely connects this verse with the preceding, and renders, "For if they had walked in good ways, they would have found the paths of righteousness light."