In Matthew 18:10 Jesus states, “See that you do not look down on one of these little ones; for I say to you that their angels in heaven continually see the face of My Father who is in heaven” (NASB). In this context, “these little ones” could either apply to people who believe in Him (verse 6) or to little children (verses 3–5). Jesus’ reference to “their angels” makes this is the key passage giving rise to the idea of guardian angels.