KJV : Because <3754> for <1223> the work <2041> of Christ <5547> he was nigh <1448> (5656) unto <3360> death <2288>, not regarding <3851> (5666) his life <5590>, to <2443> supply <378> (5661) your <5216> lack <5303> of service <3009> toward <4314> me <3165>.

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NASB : because he came close to death for the work of Christ, risking his life to complete what was deficient in your service to me.

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NASB# : because<3754> he came<1448> close<1448> to death<2288> for the work<2041> of Christ<5547>, risking<3850> his life<5590> to complete<378> what<5303> was deficient<5303> in your service<3009> to me.