Creationist Ken Ham feels dismayed that people's morality is changing and evolving throughout the times, and that more and more people seem to be letting go of God's authority on morality and are embracing what popular culture is dictating.

"Sadly, our culture largely no longer recognises God's Word as the authority, and increasing numbers of people believe man (and thus morality) evolved by natural processes," he writes in his Answers in Genesis blog. "Morality has become relative, and our society is simply doing what's right in its own eyes."

However, Ham argues that people setting their own bar for morality just won't work. If morality is relative to a society or to an individual, then no one has the right to tell other people that what they're doing is wrong.

"After all, according to this thinking, what they're doing might be right for them," he says. "By this bad thinking, who are we to call what ISIS is doing in the Middle East, or mass shooters, or child abusers wrong? It might work for them or their society, even if it makes us uncomfortable."

Ham stresses that morality cannot be based on what the consequences of one's actions might be. He clarifies that the only absolute standard for morality is the "sure foundation" of God's Word. People are not at liberty to go about changing God's Word—it is infallible and it cannot be ignored, says Ham.

"We need to remember what God's Word teaches about our being spiritual as well as physical beings," he writes. "Morality and happiness are not things that are solely dependent on our brains and chemicals. Instead, we need to look at these things through the lens of God's Word because God's Word is the only sure foundation on which to base our thinking."