this is what I learned a day ago at a prophetic conference in Dallas. we were taught that the only way to fight the power of principality was by sacrife to God. Sacrifice can be in form of money or what God leads you. In the olden times, they sacrificed animals with no blemish. So, whatever God leads you, give a sacrife to God. That way, the power that is going on in your family is going to be defeated in Jesus name. And remember that you need to be a warrior now, when you've agreed with God, be on guard. Stand on the word of God, don't let anything weaken your faith. Keep believing on God's report on deliverance. The devil might try to bring up stuff but fight him with a sacrife to God.