Here Christ had 3 years left in His earthly ministry. He used a day for a year principle. In the third "day" (year) He would be perfected (Crucified & Resurrected).
And he said unto them,
Go ye, and tell that fox,
Behold, I cast out devils,
and I do cures to day and to morrow,
and the third day I shall be perfected.
Luke 13:32