You may as well be asking, Where does the law say a 12 year old can't drink alcohol...It doesn't does it...All is says is that you must be 18 or 21 to drink...But you can bet your life that 12 year olds are covered under the law...
And when God say to repent, or repent and be baptized, you can bet that anyone that doesn't repent is not qualified for baptism...
Babies can not repent...
Once again, you are completely wrong about things. I cannot believe that you have gotten so many things wrong in your posts. You are very entertaining.
Those who have reached the age of reason that have not been baptized need to repent and be baptized. Those that have been baptized as infants need only repent. Jesus was not speaking to infants who obviously have no need to repent nor the ability to.
Oh, I get it; you are interpreting that verse as one action; well, I interpret it as two: repent, be baptized. Where does Jesus say you have to do them together?