2 Corinthians 1:6; 2 Corinthians 6:4; 2 Corinthians 12:12

2 Corinthians 1:6

6 But if we are afflicted, it is for your comfort and salvation; or if we are comforted, it is for your comfort, which is effective in the patient enduring of the same sufferings which we also suffer;

2 Corinthians 6:4

4 but in everything commending ourselves as servants of God, in much endurance, in afflictions, in hardships, in distresses,

2 Corinthians 12:12

12 The signs of a true apostle were performed among you with all perseverance, by signs and wonders and miracles.