Heimdallr is one of the Aesir gods, and ever-vigilant guardian of their realm – Asgard. His dwelling is called Himinbjörg (“Sky Cliffs”) which sits at the top of Bifrost, the rainbow bridge that leads to Asgard. He requires less sleep than a bird, his eyesight is so keen that he can see for hundreds of miles by day or by night, and his hearing is so acute that he can hear grass growing on the ground and wool growing on sheep. Here he watches and listens, holding at the ready the horn Gjallarhorn (“Resounding Horn”), which he sounds when intruders are approaching. Heimdallr himself is a son of Odinn. And he was born from nine mothers. During Ragnarok, the gods will know that their doom is at hand when they hear the dire call of Gjallarhorn signaling the imminent arrival of the giants, who will cross the rainbow bridge to storm Asgard and kill the gods. An enigmatic verse in one Old Norse poem says that Heimdallr’s hljóð is hidden beneath the world tree Yggdrasil and is associated with the eye of Odinn that he sacrificed to Mimir’s well for wisdom and sight of knowledge. ‘Hljóð’ has a wide variety of meanings, but in Heimdallr’s case it’s associated with his supernatural hearing, or quite possibly he’s actual ear that he sacrificed, much like Odinn did his eye, in order to gain the extraordinary hearing due to which he was able to “hear the grass grow”. Heimdallr is said to be the originator of social classes among humanity and once regained Freyja's treasured possession Brísingamen while doing battle in the shape of a seal with Loki. Heimdallr and Loki are foretold to kill one another during the events of Ragnarök. The 2nd Aett of Elder Futhark belongs to Heimdallr, and he is considered the god of silence, apart from being the god who gave birth to social classes among humanity. Heimdallr is a warrior. Ever-watchful, he struggles against overwhelming odds, showing unending courage in his watchfulness. His energy is invoked for psychic hearing – clairaudience, for fortified courage, endurance and focus.