King James Version
And that because of false brethren unawares brought in, who came in privily to spy out our liberty which we have in Christ Jesus, that they might bring us into bondage:English Standard Version
Yet because of false brothers secretly brought in--who slipped in to spy out our freedom that we have in Christ Jesus, so that they might bring us into slavery--New International Version
This matter arose because some false brothers had infiltrated our ranks to spy on the freedom we have in Christ Jesus and to make us slaves.