Hebrew lesson
Israel — a country with very similar demographics to Ireland — has a proven track record of successfully reviving its national language of Hebrew, which was mostly used in a religious context, and making it a vibrant, living and spoken language in a modern, progressive, bilingual country.
All of that was achieved within the past 60 years since independence — yet we have been trying for more than 100 years to achieve the same goal, but we have failed utterly.