Christian author and creationist Ken Ham has hit back at a video in which Richard Dawkins accuses God of being "lazy". He said the atheist's comments "should stand as a warning to those who compromise with man's ideas of evolution and millions of years."

Dawkins appeared in a video earlier this month in which he speaks to a character called 'Mr Deity' – supposed to represent God – telling him: "As a biologist I am uniquely qualified to understand just how lazy you've been."

"It's just so clear that no intelligent being had a hand in this mess," he adds.

"You know, it seems to me that if you really want to be useful you could do us all a favour and simply vanish. The whole of your precious creation was made by evolution and you didn't have to lift a finger to help it along. You're completely redundant, not just lazy. Even if you weren't lazy, there'd be nothing for you to do. And what's more, we have science now, making you completely unnecessary."

Ham has criticised the video as an attempt to "make fun of God". In a blog post, Ham – who debated Bill Nye 'the Science Guy' last year on evolution last year – argues for the existence of an all-powerful Creator. "It's only because God exists and because His Word is true that we can even land a probe on a comet," Ham says.

The laws of nature and their constancy cannot be accounted for by "an atheistic worldview," he argues.

"But there is a Creator, and He set the laws of nature in place at the beginning. And we can trust that these laws will work the same tomorrow as they did today because our unchanging God upholds and sustains the universe.

"Dawkins' comments should stand as a warning to those who compromise with man's ideas of evolution and millions of years. They are opening the door to compromising with the rest of God's Word. After all, if you can't trust God's Word in the very beginning, then where do you stop doubting? If we can't trust God's words in Genesis, then why should we trust God's Word in the Gospels?"

Ham urges his reads to pray for Dawkins, adding that: "Really, billions of years and evolution are an anti-God religion, and we must recognize them as such.

"Satan is very clever and is using the same attack he used on Eve, the Genesis 3 attack of "did God really say?" to make people question God's clear Word. Ultimately, he wants to lead people to reject God entirely, like Dawkins does. This is why it is so important to stand on the authority of God's Word from the very beginning, give solid answers, and preach the gospel of Jesus Christ to a dying world."

Last week, Dawkins dismissed a Christian video that claims to undo atheist reasoning about God and suffering.

Speaking to the Huffington Post, Dawkins said: "If this is the best the faith-heads can do by way of 'demolishing atheism', I hope you will give it maximum publicity in order to demonstrate how pathetic the 'argument' is. It's so weak, no reply is needed. To anyone of any intelligence at all, it replies to itself."