Hungry For God | Week 1 | Prayer and fasting for repentance

Fasting = From X (Date) to Y (Date) you do not consume Z (Usually food) in order to focus on God because of _________.
Fasting as repentance
29 “This is to be a lasting ordinance for you: On the tenth day of the seventh month you must deny yourselves b and not do any work—whether native-born or a foreigner residing among you—30 because on this day atonement will be made for you, to cleanse you. Then, before the Lord, you will be clean from all your sins. 31 It is a day of sabbath rest, and you must deny yourselves; it is a lasting ordinance.Leviticus 16:29–31 (NIV)
When they had assembled at Mizpah, they drew water and poured it out before the Lord. On that day they fasted and there they confessed, “We have sinned against the Lord.” Now Samuel was serving as leader of Israel at Mizpah. 1 Samuel 7:6 (NIV)
On the twenty-fourth day of the same month, the Israelites gathered together, fasting and wearing sackcloth and putting dust on their heads. 2 Those of Israelite descent had separated themselves from all foreigners. They stood in their places and confessed their sins and the sins of their ancestors. Nehemiah 9:1–2 (NIV)
Even if I caused you sorrow by my letter, I do not regret it. Though I did regret it—I see that my letter hurt you, but only for a little while—9 yet now I am happy, not because you were made sorry, but because your sorrow led you to repentance. For you became sorrowful as God intended and so were not harmed in any way by us. 10 Godly sorrow brings repentance that leads to salvation and leaves no regret, but worldly sorrow brings death. 2 Corinthians 7:8-10 (NIV)
Do you need to fast and pray in order to repent?