New King James Version (NKJV)
“12 And because ‘lawlessness’ (going astray from YH’s commands) will abound, the love of many will grow cold.”
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Strong’s Hebrew Lexicon:
Law: 4687 mitsvah mits-vaw’ from 6680; a command, whether human or divine (collectively, the Law):–(which was) commanded(-ment), law, ordinance, precept;
Less(ness): 7683 shagag (less) shaw-gag’ a primitive root; to stray, i.e. (figuratively) sin (with more or less apology):–X also for that, deceived, err, go astray, sin ignorantly.