Because of the iniquity of his unjust gain I was angry, I struck him; I hid my face and was angry, but he went on backsliding in the way of his own heart.
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
For the iniquity of his covetousness was I wroth, and smote him, .... Not the greedy watchmen of the church of Rome, Isa 56:10, but teachers and preachers in the reformed churches, who mind their own things, and not the things of Christ; seek after good benefices and livings, temporalities and pluralities, and to be lord bishops; taking the oversight of the flock for filthy...
covetousness--akin to idolatry; and, like it, having drawn off Israel's heart from God (Isa 2:7; Isa 56:11; Isa 58:3; Jer 6:13; Col 3:5). hid me-- (Isa 8:17; Isa 45:15). went on frowardly--the result of God's hiding His face (Psa 81:12; Rom 1:24, Rom 1:26).