In the passages found in Matthew 9:38-41 and Mark 9:49-50, Jesus talks about the importance of not hindering someone who is casting out demons in His name. He explains that those who are not against them are for them and that anyone who gives a cup of water to someone in His name will be rewarded. Both verses highlight the importance of recognizing the power of God and supporting those who are doing His work.

These passages are significant as they show the authority given to believers in casting out evil spirits. They also emphasize the importance of unity among followers of Christ, regardless of their specific work or ministry. A helpful daily application for readers is to be supportive and encouraging of those who are working to bring about the Kingdom of God, realizing that every small act of kindness or support is seen and rewarded by God.

This passage is unique to Matthew and Mark and does not appear in other parts of the Gospels. The similarities between the two verses in Matthew and Mark are clear in their message of unity and support within the body of believers, while the differences lie in the specific context and wording used by each author.