Heterosexual activity within the bond of marriage.

Yes, it is Jehovah's Witnesses

Yes, in view of what the bible says about the import of true worship, it would be wide to be fully involved with Jehovah's Witnesses. This however should not be taken lightly and a full examination of their beliefs and practices should first be undertaken (see links below)

Robert M. Bowman has written:

'Jehovah's Witnesses' -- subject(s): Controversial literature, Jehovah's Witnesses

'Why you should believe in the Trinity' -- subject(s): Controversial literature, Jehovah's Witnesses, Trinity

'Understanding Jehovah's Witnesses' -- subject(s): Bible, Criticism, interpretation, Doctrines, History, Jehovah's Witnesses

Jehovah's Witnesses believe in God. It is a monotheistic religion and a branch of Christianity. They believe that Jesus was the Son of God, for example.