The Bible can make 'good people' feel uncomfortable. Rahab was a prostitute in Jericho, but, despite her immoral lifestyle, she believed what God was going to do.
Horse riders can use a variety of bits in the animal's mouth, but the effect of all of them is to provide a means of applying a little pressure on the bare 'bars' or gums of the lower jaw, between
Hell is the English translation of Gehenna, a place in the Valley of Hinnom, south of Jerusalem, where child sacrifices were offered in the time of Jeremiah (cf Jer 7:31).
James has previously likened the tongue to a horse's bit and bridle, a ship's rudder and a fire. Now he says that our mouth can harbour a wild animal that cannot be tamed, with a poisonous bite.