It is used in reference to God Almighty. Its etymology can be traced to the Amharic language spoken by the Amharas of Ethiopia. It is used in the Iyaric dialect of Jamaican Patois commonly spoken by Rastas.
Patois: Whollan faith still, Gunguru mara haa control ova everyting
English: Hold unto faith still, God Almighty has control over everything.