Pope John Paul II outlined importance and role of evil and suffering, and how love is borne out of it in ‘Salvifici Doloris’ - document responding to problem of human evil and suffering.
Catholicism teaches love can arise from suffering = important part of life
Catholic Church sees suffering as a chance to follow example of Jesus and believe and trust it’s part of God’s plan.
Pope John Paul II says those who suffer on earth are united in that suffering of Christ (died on cross).
Believe suffering = trial, through which love, hope, faith continue.