KJV : For <1063> when God <2316> made promise <1861> (5666) to Abraham <11>, because <1893> he could <2192> (5707) swear <3660> (5658) by <2596> no <3762> greater <3187>, he sware <3660> (5656) by <2596> himself <1438>,

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NASB : For when God made the promise to Abraham, since He could swear by no one greater, He swore by Himself,

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NASB# : For when God<2316> made<1861> the promise<1861> to Abraham<11>, since<1893> He could<2192> swear<3660> by no<3762> one<3762> greater<3173>, He swore<3660> by Himself<1438>,