KJV : David <01732> [was] thirty <07970> years <08141> old <01121> when he began to reign <04427> (8800), [and] he reigned <04427> (8804) forty <0705> years <08141>.

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NASB : David was thirty years old when he became king, \i1 and\i0 he reigned forty years.

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NASB# : David<1732> was thirty<7970> years<8141> old<1121> when he became<4427> king<4427>, <I>and</I> he reigned<4427> forty<705> years<8141>.