To follow him,
The brother of James.”
καὶ οὐκ ἀφῆκεν οὐδένα μετ’ αὐτοῦ συνακολουθῆσαι εἰ μὴ τὸν Πέτρον καὶ Ἰάκωβον καὶ Ἰωάνην τὸν ἀδελφὸν Ἰακώβου.
Luke, chapter 8:51, is similar to Mark, but only mentioned them when they were at the house of Jairus. Mark said that Jesus did not allow anyone to go with him except Peter, James, and John, the brother of James. These were Jesus’ 3 favorite trusted apostles. The other disciples and apostles were excluded from this excursion to heal the young girl.