Mike Fisher wrote to wife Carrie Underwood Rachel ... in the wee hours of the morning on Monday … his mom, dad and big brother couldn’t be happier for God to trust them with taking care ...

Mike Fisher, a former NHL star ... his mom, dad and big brother couldn't be happier for God to trust them with taking care of this little miracle ... Jacob, we longed for you.

There, she lives with her husband, Mike Fisher, and their two sons ... his mom, dad and big brother couldn't be happier for ...