Albert Barnes on Galatians 4:11

I am afraid of you, etc. I have fears respecting you. His fears were that they had no genuine Christian principle. They had been so easily perverted and turned back to the servitude of ceremonies and rites, that he was apprehensive that there could be no real Christian principle in the case, What pastor has not often had such fears of his people when he sees them turn to the weak and beggarly elements of the world, or when, after having "run well," he sees them become the slaves of fashion, or of some habit inconsistent with the simplicity of the gospel?

(&) "afraid of you" "I fear concerning you"