Your iniquities, and the iniquities of your fathers together, saith the LORD, which have burned incense upon the mountains, and blasphemed me upon the hills: therefore will I measure their former work into their bosom.
Your iniquities, and the iniquities of your fathers together. Their sin had been accumulating from age to age, until God at last repaid it in full.
Burned incense upon the mountains - (Isaiah 57:7; Ezekiel 18:6; Ezekiel 20:27-28; Hosea 4:13.)
Therefore will I measure their former work into their bosom - "your" had preceded: here we find "their." From speaking to, He speaks of them; this implies growing alienation from them, and greater distance.
Work - the full recompence of their work (so Isaiah 49:4).