After founding the church in Corinth, Paul received reports (cf. 1 Corinthians 1:11-12) that the Christians there were dividing into factions, claiming superiority to one another based on which preacher/teacher they preferred. They seemed to think their walk with God was about their superior discernment or taste, rather than about receiving God’s gift of grace. That was why Paul asked them, pointedly, “What do you have that you didn’t receive?” He wanted to underscore the point that, especially (but not exclusively) in the realm of salvation, God helps us more than we ever help ourselves.