Satan.

John 13:2
The evening meal was underway, and the devil had already put into the heart of Judas, the son of Simon Iscariot, to betray Jesus.

Psalm 109:6
Set over him a wicked man; let an accuser stand at his right hand.

Matthew 12:45
Then it goes and brings with it seven other spirits more evil than itself, and they go in and dwell there; and the final plight of that man is worse than the first. So will it be with this wicked generation."

Luke 8:32, 33
There on the hillside a large herd of pigs was feeding. So the demons begged Jesus to let them enter the pigs, and He permitted them. . . .

Luke 22:3
Then Satan entered Judas Iscariot, who was one of the Twelve.

Acts 5:3
Then Peter said, "Ananias, how is it that Satan has filled your heart to lie to the Holy Spirit and withhold some of the proceeds from the land?

That.

1 Kings 18:27
At noon Elijah began to taunt them, saying, "Shout louder, for he is a god! Perhaps he is deep in thought, or occupied, or on a journey. Perhaps he is sleeping and must be awakened!"

Proverbs 1:16
For their feet run to evil, and they are swift to shed blood.

Ecclesiastes 9:3
This is an evil in everything that is done under the sun: There is one fate for everyone. Furthermore, the hearts of men are full of evil and madness while they are alive, and afterward they join the dead.

Jeremiah 2:24, 25
a wild donkey at home in the wilderness, sniffing the wind in the heat of her desire. Who can restrain her passion? All who seek her need not weary themselves; in mating season they will find her. . . .

Daniel 2:15
"Why is the decree from the king so harsh?" he asked. At this time Arioch explained the situation to Daniel.

Mark 6:25
At once the girl hurried back to the king with her request: "I want you to give me the head of John the Baptist on a platter immediately."

James 1:13-15
When tempted, no one should say, "God is tempting me." For God cannot be tempted by evil, nor does He tempt anyone. . . .