In Christianity, the purpose of fasting is not just to eat and drink water, but to deepen our relationship with God the Creator. We want to fast with God, either to hear God's voice on a particular subject or to receive a prayer answer. We also determine the type of fasting. For example, "Some people decide not to eat anything for 4 days and drink only a little water, and some people decide to eat only simple food for a few days or, for example, they do not eat or drink anything from morning to noon."
To better understand the issue, we invite you to listen to this program. Thanks!