Do you know that people are God's hands and feet? I have heard this message preached at various churches, on a few occasions. God, I am sure, does not want to see anyone who is lonely or hungry or in need of shelter and He will make sure to send people who can help when He is called upon to do so. But, was I perhaps the one He first sent to someone when I may have walked on by? This is a sobering thought. It is sobering because I may have been able to help someone who I let down and I may have let God down in the process and because perhaps I failed a test God gave me. How much sooner could change happen if we all take the first opportunity to help others? When we walk past hurting people or people in need, we miss opportunity to do God's work.
As with any subject, there is more than one way to view this topic, of course. Each one of us has finite resources to call upon, whether this be money or emotional resources or safety, and sometimes helping other people may place the helper in harm's way. We cannot help everyone we see in need or we would be a wreck ourselves.