He said to him, "Most assuredly, I tell you, hereafter you will see heaven opened, and the angels of God ascending and descending on the Son of Man."

 In this same section from John 1:19 to John 2:11 the Fourth Gospel gives us three different kinds of witness to the greatness and the uniqueness of Jesus. (i) There is the witness of John the Baptist ( John 1:19-34). (ii) There is the witness of those who accepted Jesus as their Master, and who became his disciples ( John 1:41-51). (iii) There is the witness of Jesus' own wonderful powers ( John 2:1-11). John is setting Jesus before us in three different contexts, and in each showing us his supreme wonder. 