Why is prayer and fasting important for Christians?

In Matthew 17:21, Jesus emphasizes the necessity of prayer and fasting when faced with spiritual challenges, indicating that some obstacles in our lives require more than just belief; they require spiritual preparation and reliance on God. Prayer aligns our hearts with God’s will, while fasting helps us deny our flesh and focus more intently on His purpose and strength. This practice encourages a humble dependence on God rather than our own strength, exemplifying the principle that true victory comes from acknowledging His sovereignty and seeking His help.