KJV : He taught <03384> (8686) me also, and said <0559> (8799) unto me, Let thine heart <03820> retain <08551> (8799) my words <01697>: keep <08104> (8798) my commandments <04687>, and live <02421> (8798).

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NASB : Then he taught me and said to me, "Let your heart hold fast my words; Keep my commandments and live;

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NASB# : Then he taught<3384> me and said<559> to me, "Let your heart<3820> hold<8551> fast<8551> my words<1697>; Keep<8104> my commandments<4687> and live<2421>;