19 Then came the disciples to Jesus apart, and said, Why could not we cast him out?20 And Jesus said unto them, Because of your unbelief: for verily I say unto you, If ye have faith as a grain of mustard seed, ye shall say unto this mountain, Remove hence to yonder place; and it shall remove; and nothing shall be impossible unto you. 21 Howbeit this kind goes not out but by prayer and fasting.
Jesus teaches about fasting and prayer that needs meditation. He emphasizes that casting out devils comes by prayer and fasting. He just gave a command and the demon came out.
This means Jesus was full of spiritual power when He confronted the situation. He always walked in spiritual power and authority. Making it possible that Jesus was probably fasting every time.
Fasting should be a lifestyle of abstinence from everything that defiles our human spirit. In order to give us strength for spiritual welfare and healing ministry.
Lord, I ask for strength to completely withdraw from all that makes my spirit dull and insensitive to the Holy Spirit. I declare by divine authority, that I can do all things through Christ who strengthens me.