"Columba, on the other hand spoke the language of Heaven fluently and brought early Christianity to the Celtic tribes of Britain."

I think that is a wee bit of an exaggeration though. Christianity was present among many of the tribes of Britain long before Columba arrived. Even in Scotland itself St Ninian's mission at Whithorn predates Columba by some way - and in Strathclyde the likes of St Kentigern (who's mother was also a saint) were basically contempories of Columba.