"St. Luke again associates St. John with St. Peter in the Acts of the Apostles, when, after the Resurrection, that strange boldness had come upon the disciples"

This quote by Alfred Noyes is describing the relationship in between St. Peter and St. John in the Bible. In the book of Acts, St. Luke mentions the two apostles together several times. After Jesus' resurrection, the disciples were filled with a newly found courage and strength. This is specifically real for St. Peter and St. John, who were frequently seen together in the book of Acts. They were both present at the healing of the lame male at the temple, the arrest of the apostles, and the council of the Sanhedrin. This quote is stressing the close relationship between St. Peter and St. John, and how their newfound guts and strength appeared in their actions. It is clear that St. Luke saw the 2 apostles as a group, and that their nerve and strength was a result of Jesus' resurrection.