Jesus has just been baptised by John the Baptist. On that occasion we witnessed the Spirit descending from heaven, coming down on Jesus. From now on, we see that everything that Jesus does, is guided by the Spirit of God, and is a sign of God’s Spirit.
The first thing that the Spirit does with Jesus, is to ‘drive him out’ into the desert. A remarkable expression. For the word for ‘drive out’ is used almost exclusively in connection with the driving out of evil spirits (1: 34; 1: 39; 3: 15 etc.).
Source: Jesuits in Britain