“For forty days,

Jesus was tempted

By the devil.

He ate nothing

At all

During those days.

When these days

Were over,

He was very hungry.”

ἡμέρας τεσσεράκοντα πειραζόμενος ὑπὸ τοῦ διαβόλου. Καὶ οὐκ ἔφαγεν οὐδὲν ἐν ταῖς ἡμέραις ἐκείναις, καὶ συντελεσθεισῶν αὐτῶν ἐπείνασεν.

This text is like Matthew, chapter 4:2, almost word for word, indicating a common source, perhaps Q.  Luke said that Jesus was tempted (πειραζόμενος) for 40 days (ἡμέρας τεσσεράκοντα) by the devil (ὑπὸ τοῦ διαβόλου).  During this time or in those days (ἐν ταῖς ἡμέραις ἐκείναις), Jesus did not eat anything at all (Καὶ οὐκ ἔφαγεν οὐδὲν), since he was fasting.  When the 40 days were over or completed (καὶ συντελεσθεισῶν αὐτῶν), Jesus was really hungry or famished (ἐπείνασεν).  There was a symbolism in this fast of 40 days.  Luke did not mention 40 nights, like Matthew.  Fasting was a common Hebrew exercise, while 40 was the same number of years that the Israelites were in the wilderness during the Exodus.  Jesus was really hungry at the end of his 40 day fast.  The devil, the personification of evil, tempted Jesus.  Mark, chapter 1:13, has an abbreviated description of the temptations of Jesus compared to Matthew, and Luke.  All 3 synoptics agreed that Jesus was in the wilderness 40 symbolic days.  All agreed that Jesus was tempted by Satan or the devil, the adversary or the accuser.  This concept of the adversary showed the Persian influence on the Israelites after the exile.  The older devil concept was considered a fallen angel without all the powers of God, but nevertheless very strong.  Mark said that Jesus was with the wild beasts, but this remark was not found in the other longer detailed descriptions of Matthew and Luke.  Mark made it seem like the temptation was physical, like the fear of wild animals, as he then said that the good angels ministered to Jesus, waiting on him and taking caring for him.