Psalms 37:30-31

The mouth of the righteous speaketh wisdom, and his tongue talketh of judgment.

The mouth ... and his tongue ... judgment. The law ... his heart ... shall slide. As previously he has mentioned the consolations of the godly, so now, lest any should appropriate these without being the kind of person for whom they were intended, he proceeds to describe the character of the godly. He does so in the threefold aspect presented in the decalogue: the words of the "mouth" and "tongue;" the actions, or "steps;" between these two, the heart, the center of all.

Speaketh wisdom ( yehªgeh (H1897)) - literally, meditates wisdom. His utterances are wisely considered beforehand. "Wisdom" of speech and goodness of speech, in the Scripture view, are one, even as sin and folly are one (Matthew 12:35). As the first clause is 'righteousness' toward one's neighbour, and the second piety toward "God" and His "law," so the third, "none of his steps shall slide," is one's duty toward oneself. He shall never become an utter backslider in his personal outward walk, nor shall he want "wisdom (of speech) toward them that are without" (Colossians 4:5), because "the law of his God is in his heart," according to Deuteronomy 6:6. The Holy Spirit writes it in his heart (Hebrews 8:10). This was the secret of Messiah's holiness of word and deed (Psalms 40:8). In proportion as the believer has "the law of God within his heart" he, too, will be holy (Psalms 1:2; Psalms 119:11).

[tsade (ts)]