“Further, brother will deliver up brother to death, and a father his child, and children will rise up against parents and will have them put to death.”​—Matthew 10:21.

Jesus’ advice continued with the warning: “Brother will deliver up brother to death.” He was not referring to spiritual brothers any more than he was to spiritual fathers or children with his next words in Mt 10 verse 21: “A father [will deliver up] his child, and children will rise up against parents and will have them put to death.” Jesus meant that the apostles could expect hostility or opposition even from relatives.​—Matthew 10:35, 36.

Sometimes relatives, neighbors, or workmates cause severe problems, especially for sincere ones who are beginning to pursue the course of true Christianity.