We are Jehovah's Witnesses

In here, we clearly state our ground as Jehovah's Witnesses - Isaiah 43:10-12 Every issue/law/principle/commandment is detailed in the bible, we know that.

But we believe that, as preachers and teachers of Jehovah's Love and purpose for mankind, Jehovah's faithful and discreet slave have treated every (or almost every) issue in our organization (our meetings) referencing the bible by the help of the Holy Spirit, so that we may be fully competent and completely equipped for every good work [2Tim. 3:16, 17]...

In here, we state our grounds outright  ...