Why Fast During Lent?

This Lenten season is a good time to remember that there is a difference between fasting and dieting. Both involve food restrictions, but their objectives are vastly different.

Wikipedia describes dieting as “the practice of eating food in a regulated and supervised fashion to decrease, maintain, or increase body weight.” In other words, dieting is a conscious control or a restriction of the diet in order to achieve physical outcomes.

Whereas both dieting and fasting are voluntary, starving is not. Starving is the most extreme form of malnutrition. Starvation is more the absence of food, as opposed to a conscious decision to avoid eating for a specific period of time.

Fasting is quite different from dieting and most definitely, starvation. Fasting is primarily a willing abstinence or reduction from certain or all food, drink, or both, for a period of time. Unlike dieting, the purpose of fasting is spiritual transformation.

In the process of seeking spiritual transformation, fasting triggers other benefits. According to Sarah Knapton, a science correspondent with the London Telegraph, “Scientists have found that fasting for as little as three days can regenerate the entire immune system, even in the elderly,.”

New research is suggesting that intentionally depriving the body of food can kick-start stem cells into producing new white blood cells, which fight off infection. Scientists at the University of Southern California say the discovery could be particularly beneficial for people suffering from damaged immune systems, such as cancer patients on chemotherapy.

However, such benefits are only perks, when compared with the spiritual transformation that accrues from fasting. Fasting is possibly the most powerful spiritual discipline of all Christian disciplines.

Fasting was an expected discipline in both the Old and New Testament eras. For example, Moses fasted at least two recorded forty-day periods. Jesus also fasted 40 days and reminded His followers to fast. "When you fast," he said, not if you fast.

Fasting is a biblical way to truly humble oneself in the sight of God. King David was correct when he said, "I humble myself through fasting" (Psalm 35:13). Through fasting, one acknowledges and submits to another, bigger than oneself. Even as a king, David found it necessary to acknowledge a greater authority.

In essence, fasting is an external demonstration of an internal spirit of brokenness. That attitude of brokenness is fertile ground for divine transformation. It was the same King David who stated in another Psalm, “The sacrifices of God are a broken spirit; a broken and contrite heart, O God, you will not despise” (Psalm 51:17).

It is therefore obvious why fasting and prayer go hand in hand. They are the only two disciplines that trigger the blessing promised to God’s people in 2 Chronicles 7:14. “If my people, who are called by my name, will humble themselves and pray and seek my face and turn from their wicked ways, then will I hear from heaven and will forgive their sin and will heal their land.”

In our self-absorbed and narcissistic culture, to talk about brokenness before God is radical. To fast in our post-modern culture is a statement against conceit and egotism. It is to live with a plan of depriving oneself of something of value for something of greater value. 

Whereas fasting from food is not necessarily for everyone, other deprivations could realize similar outcomes. As the late Martyn Lloyd-Jones said, “Fasting should really be made to include abstinence from anything which is legitimate in and of itself for the sake of some special spiritual purpose.”

What benefits do you hope to derive from fasting during this Lenten season? Remember, if the benefits you derive are only physical, you are not fasting, you are on diet. Fasting brings about spiritual transformation. That transformation becomes evident in our relationship with God and attitude to others.

Remember, fasting is less about what we’re giving up and much more about what we’re making room for. When we fast, we exchange what we need to merely survive for what we need to really live—more of God.