She has been a member of the church since its 'infancy'.
when the Internet was still 'in its infancy' [=very new]
She was often sick during her 'infancy'.
(..) The first was Avra. HAL: The Book of Oa, first chapter, first verse. Long ago, before our stars had ignited... ...long ago, when life was new and the universe was in its infancy... ...before order... ...there was chaos. Chaos outbalanced creation... ...hate outbalanced fellowship... (..)2011 Green Lantern: Emerald Knights