"Fasting is the act of abstaining totally or partially from eating or drinking, 1 sometimes for a period of time."source
"Biblically, to fast is to abstain from food, drink, sleep, or sex, to focus on a period of spiritual growth, specifically, we humbly deny something to the flesh to glorify God, improve our spirit, and deepen our prayer life. "source
When we go to the scriptures, Acts chapter 10, we can observe how fasting brought to Cornelius vision, strategies and resources necessary to produce a great spiritual revival, in the city of Caesarea; It also produced breakage of boundaries and prepared spiritual environments.
Likewise, in the book of Acts chapter 13: 1 and Acts chapter 14:23, the fasting that the church of Antioquia carried out unleashed ministerial assignments as results.
We as children of God, can understand that fasting is a weapon of government in our hands, since through the realization of it, we can strengthen ourselves and lower the resources of heaven on our behalf.
We understand then, that just as Jesus fasted to strengthen himself when he was going to manifest his ministry, we can even at this time make this sacrifice of consecration for the Father.
Fasting isn't a weapon of government or a weapon against government.
In the Old Testament people fasted during a time of danger or after a disaster. It's mentioned the first time in Judges.
(Judges 20:26 NIV) Then the Israelites, all the people, went up to Bethel, and there they sat weeping before the LORD. They fasted that day until evening and presented burnt offerings and fellowship offerings to the LORD.
Fasting is only mentioned twice after the resurrection of Christ. When and why you should fast isn't clear.
(Acts 13:2 NIV) While they were worshiping the Lord and fasting, the Holy Spirit said, "Set apart for me Barnabas and Saul for the work to which I have called them."
(Acts 14:23 NIV) Paul and Barnabas appointed elders for them in each church and, with prayer and fasting, committed them to the Lord, in whom they had put their trust.