There are two inter-related lists in Romans 5.1-5.  The first group describes results of our being justified by faith:

• We have peace with God through our Lord Jesus Christ
• We have obtained access by faith into this grace in which we stand
• We rejoice in hope of the glory of God
• More than that, we rejoice in our sufferings.

What was that last one? Peace, grace, hope, and glory all sound good, but what’s with suffering? Indeed this passage explains the purpose of our sufferings (and everyone has them):

• Suffering produces endurance
• Endurance produces character
• Character produces hope
• Hope does not put us to shame

Why? Because God’s love has been poured in to our hearts through the Holy Spirit who has been given to us. So suffering now is a productive gift for the present and the future.