Two people can resist an attack that would defeat one person alone. A rope made of three cords is hard to break Ecc 4:12 (GNT)
Often people talk about the one that Jesus goes after, thinking it applies to sinners alone. When you are not connected to a life group you are the one. It’s in life groups real ministry begins. Jesus himself had a life group and it was those closet to Him that enabled Him to carry out His purpose and destiny.