Charles Ellicott Commentary Deuteronomy 28:14

"and shalt not turn aside from any of the words which I command you this day, to the right hand, or to the left, to go after other gods to serve them." — Deuteronomy 28:14 (ASV)

And you shall not go aside. —It is possible, of course, to connect this sentence with the “if” in Deuteronomy 28:13, If that you hearken and do not go aside. But the Septuagint, and apparently the Targums also, begin a fresh sentence with this verse. The idea that obedience begets obedience is by no means foreign to the Jewish mind. There are many passages in their literature which contain the thought expressed so forcibly in Revelation 22:11, He that is unjust, let him be unjust still ... and he that is holy, let him be holy still.