'Spies' in the Bible

So, after impatiently watching their opportunity, they sent spies who were to act the part of good and honest men, that they might fasten on some expression of His, so as to hand Him over to the ruling power and the Governor's authority.

I have served Him by frequent travelling, amid dangers in crossing rivers, dangers from robbers; dangers from my own countrymen, dangers from the Gentiles; dangers in the city, dangers in the Desert, dangers by sea, dangers from spies in our midst;

Through faith the notorious sinner Rahab did not perish along with the disobedient, for she had welcomed the spies and had sheltered them.

In the same way also was not the notorious sinner Rahab declared to be righteous because of her actions when she welcomed the spies and hurriedly helped them to escape another way?