Притчи 10:30

21 The lips of the righteous edify many; But fools die through want of understanding.

Hitherto we have been in the porch or preface to the proverbs, here they begin. They are short but weighty sentences; most of them are distichs, two sentences in one verse, illustrating each other; but it is seldom that there is any coherence between the verses, much less any thread of discourse, and therefore in these chapters we need not attempt to reduce the contents to their proper heads, the several sentences will appear best in their own places. The scope of them all is to set before us good and evil, the blessing and the curse. Many of the proverbs in this chapter relate to the good government of the tongue, without which men's religion is vain.

10:30 This proverb connects with God’s covenant promises to Israel (see Deut 28:1-14, 63-68). Such connections are rare in the book of Proverbs.