Who sings the song played at Christmas about Jesus being a homeless man?

The song you're referring to is likely "What Child Is This?" which reflects on the humble circumstances of Jesus' birth. Another possibility is "The Little Drummer Boy," which portrays a young boy visiting Jesus and offering what he has. However, if you mean a specific modern song, it might be "Jesus, Take the Wheel" by Carrie Underwood, which touches on themes of faith and struggles. If you have a specific title in mind, please let me know!