A good man showeth favour, and lendeth - an expansion of Psalms 112:4. "Showeth favour" - a grace answering to "gracious," Psalms 112:4. Hengstenberg takes it, 'Happy is the man (who) showeth grace.' So "good," or 'well' is used in Isaiah 3:10; Jeremiah 44:17. The parallel, Psalms 112:1, "Blessed is the man," etc., favours this. So the Chaldaic Targum.
Moreover, in Hebrew, in such constructions as the English version, the substantive does not usually come after the adjective. Also, in the preceding Psalms 112:4, "Unto the upright there ariseth light" - i:e., prosperity: cf. Isaiah 58:7, "Deal thy bread to the hungry, and ... bring the poor that are cast out to thy house ... then shall thy light rise in obscurity," etc. (Proverbs 14:21, end; Psalms 37:21; Psalms 37:26).
He will guide his affairs with discretion - Hebrew, with judgment; i:e., justice, answering to "righteous," Psalms 112:4 (Psalms 25:9; Ezekiel 34:16). The root meaning of the Hebrew, "guide" [ kalkeel from kuwl ], is to measure, to sustain with due measure (Nehemiah 9:21; Psalms 55:22). So the Chaldaic and Syriac. The Septuagint [oikonomeesei], Vulgate, Ethiopic, and Arabic versions translate, 'shall regulate.' Rather, he will SUSTAIN his interests with justice in relation to his fellowmen. While cherishing his own interests, he remembers what is right to his neighbours.