Many Christians are unfamiliar with spiritual fasting. Some believe that fasting is an Old Testament tradition neither required nor relevant to the New Testament grace under which we now live. In truth, however, fasting is a necessary though underutilized spiritual discipline that Jesus addressed right along with giving and prayer (reference Matthew 6). Fasting was never replaced, rescinded, or superseded in the New Testament, and it is not just Old Testament legalism. Jesus came to fulfill the Old Testament, not to render it irrelevant. As Randy Alcorn so eloquently stated in Money, Possessions & Eternity, "Being under grace does not mean living by lower standards than the law." In fact, Jesus assumed that we believers would fast. Jesus said, "When you fast" (Matthew 6:16) not "if you fast".

The verses below emphasize that we are saved by grace, not by works. Fasting, like prayer, is a spiritual tool that believers should use not to earn righteousness but to embrace it.

"I do not set aside the grace of God, for if righteousness could be gained through the law, Christ died for nothing." (Galatians 2:21)

"For the kingdom of God is not a matter of eating and drinking, but of righteousness, peace, and joy in the Holy Spirit, because anyone who serves Christ in this way is pleasing to God and approved by men." (Romans 14:17-18)

"But food does not bring us near to God; we are no worse if we do not eat, and no better if we do." (1 Corinthians 8:8)

In the account of Jesus' desert temptation, both Matthew and Luke record that, at the end of His 40-day fast, "He was hungry". Jesus, fully man and fully God, experienced every emotion and sensation as His children do: hunger, weakness, tiredness. The significant difference, of course, is that even in His weakened state, Jesus perfectly avoided temptation and sin. He did so by completely relying on the Word of God. Jesus knows that you will feel weak, hungry, sick, and even afraid at times, but He will sustain you in ways you never thought possible. To receive that sustenance, you must persevere in trust and faithfulness.

"Jesus answered, 'It is written: Man does not live on bread alone, but on every word that comes from the mouth of God.' " (Matthew 4:4)