Mark 5:37
He did not let anyone follow him except Peter, James, and John, the brother of James.
Mark 9:2
Six days later Jesus took with him Peter, James, and John and led them alone up a high mountain privately. And he was transfigured before them,
Mark 14:33
He took Peter, James, and John with him, and became very troubled and distressed.
Luke 8:51
Now when he came to the house, Jesus did not let anyone go in with him except Peter, John, and James, and the child's father and mother.
Acts 9:40
But Peter sent them all outside, knelt down, and prayed. Turning to the body, he said, "Tabitha, get up." Then she opened her eyes, and when she saw Peter, she sat up.
2 Corinthians 13:1
This is the third time I am coming to visit you. By the testimony of two or three witnesses every matter will be established.