“I am speaking the truth in Christ—I am not lying; my conscience confirms it by the Holy Spirit—I have great sorrow and unceasing anguish in my heart. For I could wish that I myself were accursed and cut off from Christ for the sake of my own people, my kindred according to the flesh.” (Romans 9:1-3)
“Blessed are those who mourn, for they will be comforted.” (Matthew 5:4)
Perhaps universalism is Christ’s answer for Paul’s mourning.
“For his anger is but for a moment; his favor is for a lifetime. Weeping may linger for the night, but joy comes with the morning.” (Psalm 30:5)