Loki was flying as a hawk one day and was captured by Geirrod. Geirrod, who hated Thor, demanded that Loki bring his enemy (without his magic belt and hammer) to Geirrod's castle. Loki agreed to lead Thor to the trap. On the way to Geirrod's, Loki and Thor stopped at the home of Grid, a giantess. She waited until Loki left the room, then told Thor what was happening and gave him her iron gloves and magical belt and staff. Thor killed Geirrod, and all other frost giants he could find (including Geirrod's daughters, Gjalp and Greip).
A river should be stemmed at its source, he exclaimed and flung a stone at her with the result that the waters subsided and he was able to lift himself and his companions out of the stream.
He was placed opposite to the giant, and Geirrod took up a glowing bolt of iron and hurled it at the god, but Thor caught it with his gloves and raised it ready for striking.
The myth of Geirrod affords a glimpse of a sacral art involving the use of a staff, adding by way of a commentary that his rite implied a symbolic representation of the god's journey into Utgard.
When Geirrod released him and asked him to speak, Loki said who he was, and to save his life he swore to Geirrod that he would get Thor to come to Geirrod's courts without either his hammer or girdle of might.
Geirrod's daughters, Gjalp and Greip, had been hiding under the chair, and he had broken their backs.
When Thor came in and faced Geirrod, the giant grabbed with tongs a glowing lump of molten iron and threw it at Thor, who caught it with the iron gauntlets, and raised it, while Geirrod hid behind an iron pillar in an attempt to escape.