I am trying to understand Rastafarianism, and have a few questions I hope some one on here can help??? Thanks?

They are in no way christian's they just adopted christian bible text and applied to former Ethiopian Emperor Haile Selie. Taken from the heraldic symbol of the biblical Tribe of Judah (from which Selie is believed to have descended), the lion represents to Rastafarians Selie as the "King of Kings," as the lion is King; representing the lineage of the King from the Tribes of Israel. The emblem was once worn by the Emperor as a signet. Please don't get this confused with christianity, and they wear the dreds as a religious crown to copy the lion of judah's mane(hair).