Antagonist

Galatians 5:15

But if ye bite and devour one another, take heed that ye be not consumed one of another.

Proverbs 31:8

Open thy mouth for the dumb in the cause of all such as are appointed to destruction.

2 Corinthians 10:10

For his letters, say they, are weighty and powerful; but his bodily presence is weak, and his speech contemptible.

Hebrews 12:4

Ye have not yet resisted unto blood, striving against sin.

Matthew 4:1

Then was Jesus led up of the Spirit into the wilderness to be tempted of the devil.