King James Bible
"But let every man prove his own work, and then shall he have rejoicing in himself alone, and not in another."
Paul instructs believers to examine and test their own actions and conduct, using the Greek word 'dokimazo' which means to test for genuineness. This self-examination contrasts with the comparison to others mentioned in verse 3, emphasizing personal responsibility before God. After honest self-assessment, one can find legitimate satisfaction in their own spiritual progress and faithful service. This rejoicing is based on fulfilling one's God-given calling rather than measuring oneself against others' achievements. Paul warns against deriving one's sense of worth from comparing favorably to others or from their failures. This phrase completes the thought by redirecting focus from competitive spirituality to individual accountability before God.