Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
LXX

Prayer of Manasseh 1:6

the mercy of thy promise is both immeasurable and inscrutable;

Parallel Translations

LXX2012View canonical →
the mercy of your promise is both immeasurable and inscrutable;
Septuagint in American English (2012)