KJV LexiconMy son
a son (as a builder of the family name), in the widest sense (of literal and figurative relationship, including grandson, subject, nation, quality or condition, etc.
to mislay, i.e. to be oblivious of, from want of memory or attention -- at all, (cause to) forget.
not my law
a precept or statute, especially the Decalogue or Pentateuch -- law.
but let thine heart
the heart; also used (figuratively) very widely for the feelings, the will and even the intellect
to guard, in a good sense (to protect, maintain, obey, etc.) or a bad one (to conceal, etc.)
a command, whether human or divine (collectively, the Law) -- (which was) commanded(-ment), law, ordinance, precept.
Parallel VersesNew American Standard Bible
My son, do not forget my teaching, But let your heart keep my commandments;
King James Bible
My son, forget not my law; but let thine heart keep my commandments:
Holman Christian Standard Bible
My son, don't forget my teaching, but let your heart keep my commands;
International Standard Version
My son, don't forget my instruction, and keep my commandments carefully in mind.
My child, do not forget my teaching, but let your heart keep my commandments,
Aramaic Bible in Plain English
My son, do not forget my law and let your heart keep my commandments
GOD'S WORD® Translation
My son, do not forget my teachings, and keep my commands in mind,
King James 2000 Bible
My son, forget not my law; but let your heart keep my commandments:
Proverbs 3:1 NIV
Proverbs 3:1 NLT
Proverbs 3:1 ESV
Proverbs 3:1 NASB
Proverbs 3:1 KJV