John 13:26-27 Jesus responded, “It is the one to whom I give the bread I dip in the bowl.” And when he had dipped it, he gave it to Judas, son of Simon Iscariot.  When Judas had eaten the bread, Satan entered into him. Then Jesus told him, “Hurry and do what you’re going to do.”
I find it so amazing….that Jesus knew who would betray Him from the beginning, yet He never stopped showing Him love. He didn’t treat Him different through the time they had together, but Jesus knew. And verse 27 does tell me that when we make a choice to sin, we “allow” demons to take control–to a certain extent. Just as we allow the Holy Spirit to come into us when we choose to obey!