For just as the sufferings of Christ overflow to us, so also through Christ our comfort overflows. — 2 Corinthians 1:5

Paul says that as the sufferings of Christ overflow into our lives, so also does consolation through Christ. Suffering and comfort come from the same source. You don't get one without the other. If you share in His sufferings, you'll also share in His glory. The God of all comfort doesn't waste your pain.