The first inscription is longer, and especially famous because of the explicit mention of theonyms of the South Germanic pantheon; Düwel (1982) calls it the "most important runic document of the continent".
The second part, apparently added to the conventional dedication, is an exceptional testimony of continental Germanic paganism.
The explicit mention of theonyms is extremely rare in all of the runic corpus, including the later Younger Futhark Scandinavian tradition.
It would seem plausible for logaþore to be the name of another god, yielding a divine triad, but there is no obvious identification in surviving sources regarding Germanic paganism as we know it.
Klaus Düwel interpreted logaþore as "magician, sorcerer", and translates "Wodan and Donar are magicians/sorcerers", which could indicate an early Christian protective charm against the old gods.