KJV : And <2532> Zacharias <2197> said <2036> (5627) unto <4314> the angel <32>, Whereby <2596> <5101> shall I know <1097> (5695) this <5124>? for <1063> I <1473> am <1510> (5748) an old man <4246>, and <2532> my <3450> wife <1135> well stricken <4260> (5761) in <1722> years <2250> <846>.

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NASB : Zacharias said to the angel, "How will I know this \i1 for certain?\i0 For I am an old man and my wife is advanced in years."

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NASB# : Zacharias<2197> said<3004> to the angel<32>, "How<2596><5101> will I know<1097> this<3778> <I>for certain?</I> For I am<1510> an old<4246> man<4246> and my wife<1135> is advanced<4260> in years<2250>."