Answer

The day of birth is ‘Good Friday’ and the significant event of the ‘Irish Peace deal’ being close to being settled gives the poem a political background, another difficult birth.

The links between the birth of the lamb and the Good Friday agreement show that this was a difficult thing to achieve ‘a difficult birth’ but it was achieved in the end and everyone was very pleased with the outcome. Something good occurred on that Friday, just as it did 2000 years ago.