The best description of this example is the POV of the Gnostics such as Marcion.
Essentially, they noticed apparant differences in God between the Old and New testaments. Also, they considered that the old testament God had moral failings - e.g. deliberately putting the tree of Knowledge of Good and Evil in the garden and then telling Adam and Eve not to eat anything from it, and then not preventing the serpent, or the various other examples of condoning incest, murder, etc.
Their conclusion was that the god of the old testament (referred to as Yahweh) and the God of the new testament (referred to as God (in Greek)) were not the same. They further considered that not only was Yahweh evil, but Yahweh is the source of all evil, i.e. the devil. They considered the serpent to be the good god.
Obviously this was considered a very very very dangerous and extreme heresy by the early church, and their attacks on Marcion drip with vitriol.
 18:46, 19 Nov 2004 (UTC)