Matthew 17:1
And after six days Jesus took with him Peter and James, and John his brother, and led them up a high mountain by themselves.
Matthew 26:37
And taking with him Peter and the two sons of Zebedee, he began to be sorrowful and troubled.
Mark 5:37
And he allowed no one to follow him except Peter and James and John the brother of James.
Luke 9:28-36
Now about eight days after these sayings he took with him Peter and John and James and went up on the mountain to pray.
Mark 9:2-13
And after six days Jesus took with him Peter and James and John, and led them up a high mountain by themselves. And he was transfigured before them,
Luke 8:51
And when he came to the house, he allowed no one to enter with him, except Peter and John and James, and the father and mother of the child.
2 Corinthians 13:1
This is the third time I am coming to you. Every charge must be established by the evidence of two or three witnesses.
2 Peter 1:18
we ourselves heard this very voice borne from heaven, for we were with him on the holy mountain.