'Adversaries' in the Bible

Were it not that I feared the provocation of the enemy, Lest their adversaries should judge amiss, Lest they should say, Our hand is exalted, And Jehovah hath not done all this.

If I whet my glittering sword, And my hand take hold on judgment; I will render vengeance to mine adversaries, And will recompense them that hate me.

Rejoice, O ye nations, with his people: For he will avenge the blood of his servants, And will render vengeance to his adversaries, And will make expiation for his land, for his people.

And this is the blessing of Judah: and he said, Hear, Jehovah, the voice of Judah, And bring him in unto his people. With his hands he contended for himself; And thou shalt be a help against his adversaries.