Charles Spurgeon Commentary Galatians 4:17

"They zealously seek you in no good way; nay, they desire to shut you out, that ye may seek them." — Galatians 4:17 (ASV)

They zealously affect you, but not well; yes, they would exclude you, that you might affect them.

They would, if they could, turn you out of our love that you might run after them. These false teachers would shut us out of your hearts that your hearts might go after them.