(Luke 4)
Then YAHSHUA, full of and controlled by the Holy Spirit, returned from the Jordan and was led in [by] the [Holy] Spirit for during forty days in the wilderness, where He was tempted by the devil. And He ate nothing during those days, and when they were completed, He was hungry (Like 4:1,2). The devil came to YAHSHUA at the point of His need – hunger. Forty days and nights without eating can starve the body and lead it to death, that is, for some people, depending on their health factors. Forty days is long enough time for the body to have used all the resources it had to be sustained. YAHSHUA, as a man, was subject to the weakness of a human body, but not to man’s sinful nature. He was led to the wilderness by the Holy Spirit to be tempted in preparation for the ministry He was going to fulfill. Like us, He was also subjected to temptations, and to the extent of sufferings that we experience. So after fasting forty days and forty nights, His obvious need of that moment was hunger. Hunger and thirst in the desert are something hard to overcome without having knowledge of how to survive in such environment which lacks everything that benefits the body. The Bible does not say if He went without water however, I assume so. Whatever the situation, He went hungry after forty days.
Light from the Word 