“They zealously affect you, but not well; yea, they would exclude you, that ye might affect them.”
King James Version (KJV)
4:17 They - The judaizing teachers who are come among you. Zealously affect you - Express an extraordinary regard for you. But not well - Their zeal is not according to knowledge; neither have they a single eye to your spiritual advantage. Yea, they would exclude you - From me and from the blessings of the gospel. That ye might affect - Love and esteem them.
Ga 4:17 They zealously affect you, [but] not well. The false, Judaizing teachers are meant. They showed great zeal for them, but they were not seeking their good. Yea, they would exclude you, that ye might affect them. Exclude you from the great body of Gentile believers and bind you to their clique.