'Cooperate' in the Bible
Israel sent messengers to the king of Edom, saying, "Please allow us to pass through your land." But the king of Edom rejected the request. Israel sent the same request to the king of Moab, but he was unwilling to cooperate. So Israel stayed at Kadesh.
Meanwhile, the messenger who had gone off to summon Micaiah advised him, "Look, everything that the other prophets were saying was unanimously favorable to the king. So please, cooperate with them and speak favorably."
Meanwhile, the messenger who had gone off to summon Micaiah advised him, "Look, everything that the other prophets were saying has been unanimously favorable to the king. So please, cooperate with them and speak favorably."
while you join in helping us by your prayers. Then thanks will be given by many persons on our behalf for the gracious gift [of deliverance] granted to us through the prayers of many [believers].
So we ought to support such people [welcoming them as guests and providing for them], so that we may be fellow workers for the truth [that is, for the gospel message of salvation].