'Child' in the Bible

So for Michal the daughter of Saul, she had no child until the day of her death.

Then Nathan went to his house, and Yahweh struck the child that the wife of Uriah bore for David, and he became ill.

It happened on the seventh day that the child died, and the servants of David [were] afraid to tell him that the child [was] dead, for they said, "Look, when the child [was] alive, we spoke to him, but he would not listen to our voice. How can we tell him, 'The child [is] dead'? He may do [something] evil."

When David saw that his servants [were] whispering together, he realized that the child [was] dead. Then David said to his servants, "[Is] the child dead?" And they said, "He [is] dead."

Then his servants said to him, "What [is] this thing that you have done? While the child [was] alive, you fasted and wept; [now] that the child has died, you get up and eat food!"

He said, "When the child [was] still alive, I fasted and I wept because I thought, 'Who knows? Yahweh may have mercy on me that the child will live.'