"After fasting forty days and forty nights, he was hungry." ~ Matthew 4:2
Jesus knows. He has been there.
When the gnawing feeling of hunger eats at the inside of your belly, or makes your soul ache and you want to give up because fasting is just "too hard".
"He was hungry."
40 days and 40 nights of fasting. In the desert. Yeh, He knows. He KNOWS.
The same thing that sustained our Savior through temptation after 40 days and nights of fasting can get you through also - the Word of God. (Matthew 4:4, Deuteronomy 8:3)