[5] es ‘by which’: (a) Es is taken here as a rel. introducing a clause that appears to elaborate on þann styrk ‘that strength’ (l. 4). (b) It could alternatively be the conj. equivalent to at ‘that’ (LP: at 7). Skj B translates þann styrk ... es felldi as sådan magt ... at (mændene) fældede ‘such power that (the men) felled / could fell ...’. (c) Es could alternatively be the conj. ‘when, since, because’.