Krishna does not begin gently. His very first words to Arjuna are a challenge: Where has this weakness come from? At this critical hour, on this battlefield, how has this impurity overtaken you? There is no hand-holding here, no soft reassurance. Krishna speaks like a teacher who sees his student about to make a grave error.
Three charges land one after another. This behaviour is unworthy of a noble person. It will not lead to heaven. And it will bring dishonour. Krishna names the consequences plainly, without decoration. He is not trying to comfort Arjuna — he is trying to wake him up.
The word kashmalamidам — delusion or impurity of mind — is significant. Krishna does not call Arjuna's grief a noble sentiment. He calls it a contaminant. A fog that has settled on a clear mind. And his entire teaching in the chapters ahead is aimed at lifting that fog.