Interpreting the Rising Poem

[Berethos]

The spear (of Darkness?) that pierces the stone..
The blade (of Light) that cuts[B] the sea...

This particular part of it is tickling my brain, but I'm not sure how to approach it - the context based on the rest of the poem leads me to different interpretations based on which language it's in.

Both the English and the Japanese translation provided lead me to think of Zodiark (the Rock that is pierced by the spear) and Hydaelyn (the sea cloven by the silver sword/Blade of Light). That then conjures in my mind an image of someone set against both Zodiark and Hydaelyn.

The French and German versions, on the other hand, result in that section of the poem reading more like it's a boastful honorific of sorts, describing a stalwart champion who (in a less humorous sense) stabs figurative mountains and slashes metaphorical waves.

And so the itch continues - I'm not sure if I'm reading too much into the last couple lines.

The argent (silver) weapon that cleaves the ocean is most definitely the aetherial blade, and "adamantine" metals are often characterized as being dark if not jet-black, so based on the rest of the poem giving each entity their due, I would have to assume it is His representative weapon.

I find it interesting that the item that seems to connect to Zodiark is not described as piercing the sea, and vice versa for the silver weapon - they both seem to be aimed at their own wielder based on this interpretation.

Though it does also feel like the poem is describing a single entity wielding both (except for the Japanese translation which is non-specific, and not knowing any Japanese I obviously can't tell if there's a clue in the original text)