The little boy was found in the Holy Child Jesus Catholic Church in Richmond Hill in Queens in November.
The unnamed mother was tracked down by police, however she will not be prosecuted due to a 'safe haven' law, which allows a newborn baby to be dropped off anonymously at a church, hospital, police or fire station without repercussions.
Speaking anonymously to the New York Post, she said: "I knew if I left him in God's hands, he would be OK."
The 18-year-old had recently moved to the United States from Mexico, and claimed that she had only put on 10 pounds in weight during her pregnancy and that even her aunt, who lives with her, did not know she was expecting a child.
The woman gave birth alone after two hours of painful labour and was scared to cut the umbilical cord.
She had no clothes for the baby prepared, but told the paper that the child's lips turned purple as she walked with him to the Holy Child Jesus Church so she went into a store and bought a towel to wrap him in.
The baby was found a worker who left the church on a lunch break, he heard the baby once it began crying.
A priest at the Holy Child Jesus Church said a young couple from the church say that they hope they will be allowed to adopt the baby as the mother has not yet decided whether to keep the child.
Fr Christopher Heanue said: "A young couple in our parish would love to adopt this child and keep this gift in our community.
"It would make a great Christmas miracle.
"The beautiful thing is that this woman found in this church – which is supposed to be a home for those in need - this home for her child."
