Jesus was not only concerned with mankind, but with specific people. He saw them one at a time. He could hear one voice in a crowd. He could feel one touch when touched by many. Salvation was and is in a personal relationship with Jesus Christ.
Some leaders are great in large groups, but fail miserably in personal relationships.
Jesus likened Himself to a Good Shepherd who knew His sheep by name. Jesus did not relate to His disciples as a group, but He called them individually, and they individually knew and related to Him. He practiced in particular what He preached in general. It was His personal touch that imparted life and destiny. Even as He died between two thieves, He ushered one into Paradise.