Very well, many helpful postings plus some with regards to the Canon, wonderful!
Out of purpose I just said "without practice". From what I know of living 39 years this Life and Practicing in Therms of Dhamma for 16 years now I'd say it's or it must be impossible to be suddenly enlightened without any preceding efforts towards it, or at least a wholesome conduct and investigation into how things are with regards to their true nature. I don't believe in any shortcuts, reflecting my own conduct over those years, failures and by wrong view supported Thinkings and Doings I am sure, very very sure, that the eightfold path is the way. But I was curious if there is anything to be found within the canon that gives an example of sudden, unexpected, untrained etc. breakthrough towards Enlightenment.
Thanks to all of you for clearing this up