Depending on your diocese, there are two options for the readings. If your parish celebrated the Ascension on Thursday then the gospel reading will be about Jesus praying for his disciples at the end of the Last Supper discourse. After the prayer, Jesus is arrested in the garden.
Jesus’ prayer reaffirms the complete union between Jesus and the Father. Throughout John’s Gospel, Jesus has been presented as the Word, who pre-existed with the Father and was sent to do the Father’s work on earth. In this prayer we learn that Jesus’ life and ministry have been directed toward one purpose, revealing the Father. When this work is accomplished, Jesus is to return to the Father to be glorified. Regardless of what happens to Jesus, in John’s Gospel, Jesus and the Father are in charge. Even in the description of Jesus’ death, Jesus does not simply die but instead hands over his spirit.
Loyola Press Sunday Connection – Seventh Sunday of Easter
If the Ascension is being celebrated then the gospel reading is from Matthew 28. Jesus tells his disciples to go out to baptize and teach in all nations.
Jesus commissions his disciples to baptize in the name of the Trinity, one of the clearest attestations found in Scripture for baptism in the name of the Trinity. In the Acts of the Apostles and in the Letters of Paul, baptism is more frequently offered “in the name of Jesus.”
Loyola Press Sunday Connection – The Ascension of the Lord
The ending of Matthew’s Gospel can be understood as the beginning of the Church. Jesus commissions his disciples to continue to teach in his name and to bring others into the community of disciples through baptism. The Gospel ends, as it had begun, with the promise that Jesus will continue to be Emmanuel, “God with us” (cf. Matthew 1:23), for all eternity.