This is a picture of the armor of a knight. This armor would protect them in battle. It would help stop arrows and swords from piercing a knights skin. The armor protected you well, but it was heavy which meant it slowed down a knights stamina.
babylonsidhe: The Hand of the Mysteries goes by many other names, including the Hand of the Master Mason, Hand of the Philosopher, and the Emblematic Hand of Mysteries. (via Hand of the Mysteries - Alchemy symbol of transformation)