Isaiah
Isaiah 57:19BSB·traditional attribution

bringing praise to their lips. Peace, peace to those far and near,” says the LORD, “and I will heal them.”

Matthew Henry Presbyterian @wholebiblehenry

The body of the people of Israel, in this account of God's dealings with them, is spoken of as a particular person (Isa 57:17, Isa 57:18), but divided into two sorts, differently dealt with - some who were sons of peace, to whom peace is spoken (Isa 57:19), and others who were not, who have nothing to do with peace, Isa 57:20, Isa 57:21. Observe here, I.

Commenting on Isaiah 57:17-21

John Gill Reformed Baptist @doctorgill

I create the fruit of the lips,.... Which is praise and thanksgiving, Heb 13:16 that is, give occasion of it, afford matter for it, by restoring comforts to the church and its mourners, as in the preceding verse; and by giving peace, as in all the following words.

Jamieson-Fausset-Brown Reformed @jfbcommentary

fruit of . . . lips--that is, thanksgivings which flow from the lips. I make men to return thanks to Me (Hos 14:2; Heb 13:15). Peace, peace--"perfect peace" (see Isa 26:3, Margin; Joh 14:27). Primarily, the cessation of the trouble s now afflicting the Jews, as formerly, under the Babylonian exile.