The Two Towers
"I serve only the Lord of the Mark, Théoden King son of Thengel," answered Éomer. "We do not serve the Power of the Black Land far away, but neither are we yet at open war with him; and if you are fleeing from him, then you had best leave this land. There is trouble now on all our borders, and we are threatened; but we desire only to be free, and to live as we have lived, keeping our own, and serving no foreign lord, good or evil. We welcomed guests kindly in the better days, but in these times the unbidden stranger finds us swift and hard." (3.2.124)
But Isengard cannot fight Mordor, unless Saruman first obtains the Ring. That he will never do now. He does not yet know his peril. There is much that he does not know. He was so eager to lay his hands on his prey that he could not wait at home, and he came forth to meet and spy on his messengers. But he came too late, for once, and the battle was over and beyond his help before he reached these parts. He did not remain here long. I look into his mind and I see his doubt. He has no woodcraft. He believes that the horsemen slew and burned all upon the field of battle; but he does not know whether the Orcs were bringing any prisoners or not. And he does not know of the quarrel between his servants and the Orcs of Mordor; nor does he know of the Winged Messenger. (3.5.98)
"A man may love you and yet not love Wormtongue or his counsels," said Aragorn.
"That may be. I will do as you ask. Call Háma to me. Since he proved untrusty as a doorward, let him become an errand-runner. The guilty shall bring the guilty to judgement," said Théoden, and his voice was grim, yet he looked at Gandalf and smiled and as he did so many lines of care were smoothed away and did not return. (3.6.81-2)