John 1:51 in the King James Version
And he saith unto him, Verily, verily, I say unto you, Hereafter ye shall see heaven open, and the angels of God ascending and descending upon the Son of man.
Context
50 Jesus answered him, “Because I told you, ‘I saw you underneath the fig tree,’ do you believe? You will see greater things than these!”
51 He said to him, “Most certainly, I tell you all, hereafter you will see heaven opened, and the angels of God ascending and descending on the Son of Man.”