Next Sunday is the celebration of the Solemnity of All Saints. You can read a complete commentary on the Gospel here.
1 When he saw the crowds, he went up the mountain, and after he had sat down, his disciples came to him. 2 He began to teach them, saying: 3 “Blessed are the poor in spirit, for theirs is the kingdom of heaven. 4 Blessed are they who mourn, for they will be comforted. 5 Blessed are the meek, for they will inherit the land. 6 Blessed are they who hunger and thirst for righteousness, for they will be satisfied. 7 Blessed are the merciful, for they will be shown mercy. 8 Blessed are the clean of heart, for they will see God. 9 Blessed are the peacemakers, for they will be called children of God. 10 Blessed are they who are persecuted for the sake of righteousness, for theirs is the kingdom of heaven. 11 Blessed are you when they insult you and persecute you and utter every kind of evil against you (falsely) because of me. 12 Rejoice and be glad, for your reward will be great in heaven. (Matthew 5:1-12)
During the first 300 year of the Christian church, the people of God endured periods of peace, but also extended periods of persecution. Especially in the local churches, each generation remembered the martyrs and the leaders who exemplified the faith. By the fourth century these women and men were honored in liturgies that commemorated their passing into God’s bright glory. In time, churches were named to honor their memory, sometimes even built on their tombs. And in time relics were collected and honored.