From Scott Hahn:
"Blessed are those who are persecuted for righteousness' sake, for theirs is the kingdom of heaven. Blessed are you when men revile you and persecute you and utter all kinds of evil against you falsely on my account. Rejoice and be glad, for your reward is great in heaven" (Matt 5:10-12)
"We rejoice in our hope of sharing the glory of God; more than that, we rejoice in our sufferings, knowing that suffering produces endurance, and endurance produces character, and character produces hope, and hope does not disappoint us, because God's love has been poured into our hearts through the Holy Spirit" (Romans 5:2-5)
"Count it all joy, my brethren, when you meet various trials, for you know that the testing of your faith produces steadfastness..." (James 1:2-3)
"In this you rejoice, though now for a little while you may have to suffer various trials, so that the genuineness of your faith, more precious than gold which though perishable is tested by fire, may redound to praise and glory and honor" (1 Peter 1:6-7).
"Beloved, do not be surprised at the fiery ordeal which comes upon you to prove you, as though something strange were happening to you. But rejoice in so far as you share Christ's sufferings, that you may also rejoice and be glad when his glory is revealed.... If one suffers as a Christian, let him not be ashamed, but let him glorify God" (1 Peter 4:12-16)
"Therefore, since we are surrounded by so great a cloud of witnesses, let us also lay aside every weight and sin, which clings so closely, and let us run with perseverance the race that is set before us, looking to Jesus the pioneer and perfecter of our faith, who for the joy that was set before him endured the cross, despising the shame, and is seated at the right hand of the throne of God" (Hebrews 12:1-2)