Blake appears to view God as a kind figure, but at the same time, questions the way he works. God is described as being meek and mild in "the lamb" as well as having a "tender voice" and "making all the vales rejoice". In "The tyger", however, Blake goes on to question why God would create evil in the world even though he's supposed to be kind.
Blake's view on human nature doesn't state that people are strictly good or bad, but that humans have good and bad aspects. In "the lamb" he likens humans to god by saying "He became a little child, I a child & thou a lamb" and then says in "the tyger" "Did he who made the Lamb make thee?", thee being Satan. In this, he's saying that humans can do good and bad things.