Father...in your word you say that the enemy bit your son's heel...but Jesus crushed his head. The enemy has no power over believers. By the authority of the living God the Father and his son, the risen Savior Jesus...I command whatever demons are attacking this family to leave them alone. You have no power...you are like an aging lion seeking to create fear but not having the strength to strike. Be gone at once and never return. I plead the blood of Jesus over each of these dark spirits that they may feel the fire of the Lord as warning to retreat before he destroys them. In Jesus holy name...Amen and Amen!