In his Enquiry Concerning the Principles of Morals, David Hume writes that moral deliberations originate from our sentiments and inclination towards utility. In other words, morality comes from our sense of pleasure and pain, which are the most fundamental human psychological faculties. One way or another, right and wrong are merely expressions of emotion or sentiment and are a way by which we express our sympathy, compassion, and respect for life and the well-being and happiness of life. We know that, say, killing is wrong, because empathy and feelings within our brain instruct us that we would not want to experience the horror of being killed. We know that kindness is right because kindness directly produces happiness, helpfulness, and utility for others. Morality, therefore, is a human faculty and a capability from our own brain and psychology. Statistically, there is no correlation between religiosity and moral standards. Many secular and non-religious countries can have very low crime rates (like Japan), while many deeply religious countries can have high crime rates (like many countries in South America). Given the psychological basis of morality and the real world statistics, that religion is irrelevant in ethical considerations is evident to every pair of eyes.

Religion is the opposite of morals, it is a doctrine, you believe without questioning. In the name of religions the most inhuman atrocities occurred in the world. And that is because a god system doesn't rely on simple human behavior, you lack the action-reaction principle. When Theodosius slaughtered 17.000 Greeks in Thessaloniki (including kids) he didn't rely on his human morality, but the fact they didn't believe in Christianity, and according to his religion this atrocity was justified. Later they made him a saint and even named him "Great Theodosius" as if he is a great murderer. He is still being regarded a saint in the orthodox church and they address his inhuman behavior as if he "regret his actions and god forgave him"... so simple. When an extremist islamist kills people, he does it for his religion. The principle of humanity is don't do to others, what you don't want to be done to yourself. That is a great moral.

This is framed poorly, even from a religious perspective. People like me who believe in objective morality believe that an Ultimate Authority is necessary for a true understanding of good and evil, not that a person needs to be individually religious to be moral.