This is something I wrote long ago.
4 March 10
Jesus answered, He it is, to whom I shall give a morsel, when I have dipped it. And when he had dipped the morsel, he gave it to Judas Iscariot, the son of Simon. And after the morsel Satan entered into him. Then said Jesus unto him, what you do, do quickly.
1. Why did Satan enter Judas?
First, he did not want things to mess up; he didn't want any mistakes, so he did not delegate it; he did it himself. Second, betraying Jesus Christ, the Son of God, was something he would enjoy.
2. Why Judas?
Because he surrendered his will to do evil. Satan put the thought in Judas' heart, and he agreed. He loved money instead of God. He looked at the present rather than the future.
3. What can we learn?
We must seek the Kingdom of God first. We must set our minds, our wills, to live in the Kingdom of God. Obeying the truths of what the Lord Jesus taught us in the New Testament must be important enough for us, that we do them.