What is it
Fasting is best summarised as willingly abstaining from eating for a defined period of time for a spiritual purpose.1 It may be a practice you are wholly unfamiliar with, or a practice you are suspicious or even fearful of. Historically it has been one of the core practices the church and followers of Jesus have used in their discipleship.
The practice of biblical fasting stands apart from other practices of abstaining from food such as hunger strikes, which seek to gain political power, or health dieting, which stresses the physical implications. Rather, biblical fasting must always be focused on spiritual purposes.2
Why we should do it
Our society is obsessed with the things of the flesh, not just food, but excess, luxury, and addiction. For many of us, the desires of our bodies hold power over us. But fasting, at its root, is a habit of self-denial, not as an end in itself but for a spiritual purpose.
We must understand the distinction here. We practice abstaining from food, not because food itself is bad (rather quite the contrary!) but to highlight our longing for Jesus and recognise his ultimate sufficiency. Indeed, when practising fasting, an individual, or a community, will use the time not spent eating in prayer or scripture reading - that is, feasting on the word of God. Fasting is feasting!3
Fasting is also our response to God and our need for him. It can be a worshipful response, an expression of repentance, a response to a moment or situation where we must earnestly seek God, a response to the need for greater spiritual discipline, or it may even be a response to pursue justice and righteousness (Isaiah 58 v6-7). In fact, throughout the gospel accounts fasting is mentioned in the same breath as prayer and/or worship (Acts 13 v2, Mark 9 v29)
In all of this, the ultimate goal of fasting is to deeply and intentionally commune with God, to grow in devotion and love for him. C.H. Spurgeon, a minister in Victorian London, once wrote: “Our seasons of fasting and prayer at the Tabernacle have been high days indeed; never has Heaven’s gate stood wider; never have our hearts been nearer the central Glory.”4