Matthew 17:1

Overview - Matthew 17
The transfiguration of Christ.
14 He heals the lunatic,
22 foretells his own passion,
24 and pays tribute.
Treasury of Scripture Knowledge

Matthew 17:1  (King James Version)
And after six days Jesus taketh Peter, James, and John his brother, and bringeth them up into an high mountain apart,

Luke, taking in both the day of the preceding discourse and that of the transfiguration, as well as the six intermediate ones, says it was eight days after.
Mark 9:2-13 ; Luke 9:28-36

26:37 Mark 5:37 ; Luke 8:51 ; 2 Corinthians 13:1

an high
2 Peter 1:18