Galatians 4:17

17 Those people are zealous to win you over, but for no good. What they want is to alienate you from us, so that you may have zeal for them.

Read Galatians 4:17 Using Other Translations

They zealously affect you, but not well; yea, they would exclude you, that ye might affect them.
They make much of you, but for no good purpose. They want to shut you out, that you may make much of them.
Those false teachers are so eager to win your favor, but their intentions are not good. They are trying to shut you off from me so that you will pay attention only to them.