You’re not confessing sin for salvation. For your spiritual self. You’re confessing sin so you won’t get sick? Dude... are you serious? Answer my question... why wasn’t the Apostle Paul healed of his infirmity? He could heal others. He worked miracles. He was with the other apostles who healed others and worked miracles. Yet he suffered “sickness” his entire life. Why?
>> “You’re confessing sin so you won’t get sick?” <<
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No, you’re already sick. Confess and repent to be healed!
Sin brings disease, and will do so until we either die, or Yeshua returns, and “we know as we are known.”
>> “ why wasn’t the Apostle Paul healed of his infirmity?” <<
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You’ll have to read Romans 7 again for the answer to that question.