Frika

as i believe in the norse gods, i feel it is my duty to comment on this song when i first listened to it, i almost started to cry cause to me, that is the perfect model of a viking prayer how it should be sung in our time. due to the fact that the viking religion is alive and not static, it HAS to be adapted to changing times and it is a very christian way of thinking that one has to recite old prayers in old languages to make things happen or to get the power of it. what is important is, that you put in so much emotion and power by your very own thoughts so that it works for you, and that is exactly, what ronan did here and as for your 'goddess of peace' theory ... of course, that is what frigga stands for in the first place, but in the norse pantheon, there are dozens of meanings to every one god, and so here it is also spoken of the rage, destruction and ferocity that frigga stands for and which can be triggered in oneself by adressing her in prayer

remark: don't get me wrong, that is my personal opinion on the godess and these lyrics, no guarantee whether that is so for ronan as well