There is a difference between being an atheist and being agnostic. The atheist says there is no God and the agnostic is not certain. The bible also says that the liar and the thief will not see heaven. So if the atheist or the agnostic is a liar or a thief then they still have three strikes against them.
Many atheists also say they don’t know. Agnosticism isn’t saying “I don’t know”, it is saying that such a question in unknowable.