Matthew 17:1
AND after six days Jesus took Peter, and James, and John, his brother, and led them up on a high mountain by themselves.
Matthew 26:37
And taking Peter and the two sons of Zebedee, he began to be sorrowful and dejected.
Mark 5:37
And he permitted no man to accompany him except Peter, and James, and John the brother of James.
Luke 9:28-36
AND about eight days after these words, taking Peter, and James, and John, he went up on the mountain to pray.
Mark 9:2-13
AND after six days Jesus took Peter, and James, and John, and brought them up on a high mountain by themselves alone, and was transfigured before them;
Luke 8:51
And when he entered into the house, he permitted no one to go in with him, except Peter, and John, and James, and the father and mother of the child.
2 Corinthians 13:1
This third time I am coming to you; by the mouth of two or three witnesses shall every word be established.
2 Peter 1:18
And this voice we heard brought from heaven when we were with him on the holy mount.