'Child' in the Bible

what [is] a human being that you think of him? and a child of humankind that you care for him?

Ah, Yahweh, I [am] indeed your servant; I am your servant, the child of your maidservant. You have loosed my bonds.

Rather I have soothed and quieted my soul, like a weaned child with its mother, like the weaned child [is] my soul with me.