18 On the seventh day the child died. David’s attendants were afraid to tell him that the child was dead, for they thought, “While the child was still living, he wouldn’t listen to us when we spoke to him. How can we now tell him the child is dead? He may do something desperate.”

Read 2 Samuel 12:18 Using Other Translations

And it came to pass on the seventh day, that the child died. And the servants of David feared to tell him that the child was dead: for they said, Behold, while the child was yet alive, we spake unto him, and he would not hearken unto our voice: how will he then vex himself, if we tell him that the child is dead?
On the seventh day the child died. And the servants of David were afraid to tell him that the child was dead, for they said, "Behold, while the child was yet alive, we spoke to him, and he did not listen to us. How then can we say to him the child is dead? He may do himself some harm."
Then on the seventh day the child died. David’s advisers were afraid to tell him. “He wouldn’t listen to reason while the child was ill,” they said. “What drastic thing will he do when we tell him the child is dead?”