'Baby's' in the Bible

On the eighth day, the flesh of the baby's foreskin is to be circumcised.

So they motioned to the baby's father to see what he wanted to name him.

And when the time for their purification came [that is, the mother’s purification and the baby’s dedication] according to the Law of Moses, they brought Him up to Jerusalem to present Him to the Lord [set apart as the Firstborn]