'Messengers' in the Bible

And [when] the messengers of John had departed, he began to speak to the crowds concerning John: "What did you go out into the wilderness to see? A reed shaken by the wind?

And he sent messengers before {him}, and they went [and] entered into a village of the Samaritans in order to prepare for him.

If [there is a question] concerning Titus, [he is] my partner and fellow worker for you. If [there is a question concerning] our brothers, [they are] messengers of the churches, the glory of Christ.

And likewise was not Rahab the prostitute also justified by works [when she] welcomed the messengers and sent [them] out by a different route?