He is the one who comes after me, who is preferred before me, whose sandal strap I'm not worthy to loosen."

 No one is so careful of details of time as John is. Starting from this passage and going on to John 2:11 he tells step by step the story of the first momentous week in the public life of Jesus. The events of the first day are in John 1:19-28; the story of the second day is John 1:29-34; the third day is unfolded in John 1:35-39. The three verses John 1:40-42 tell the story of the fourth day. The events of the fifth day are told in John 1:43-51. The sixth day is left a blank. And the events of the last day of the week are told in John 2:1-11. 