'Messengers' in the Bible

And when the messengers of John were departed, he began to say unto the multitudes concerning John, What went ye out into the wilderness to behold? a reed shaken with the wind?

and sent messengers before his face: and they went, and entered into a village of the Samaritans, to make ready for him.

Whether any inquire about Titus, he is my partner and my fellow-worker to you-ward, or our brethren, they are the messengers of the churches, they are the glory of Christ.

And in like manner was not also Rahab the harlot justified by works, in that she received the messengers, and sent them out another way?