More than 9000 people are expected to attend the event at the Scottish Exhibition and Conference Centre which starts tomorrow.
The convention's theme is 'God's Word is Truth' and organisers have promised a fresh examination of Bible principles and how they apply to modern living.
Volunteers will erect a large baptism pool holding 10,000 litres of water so candidates can be baptized by full water immersion on Saturday.
There will also be Bible readings, presentations and two plays.
The event is one of 42 similar conventions to be held across Britain, the Channel Islands and Ireland.
In Scotland, more than 100 congregations of Jehovah's Witnesses have been distributing printed invitations to the free convention.