there is also no Scriptural account of Baptizing retarded or mentally-imbalanced people, yet the Church has always done so.
Case in point, in Matthew 17:14-18, we are told how Jesus cast out a demon from a young boy because of an appeal by the boy's father:
"When they came to the crowd, a man approached, knelt down before Him, and said, 'Lord, have pity on my son for he is a lunatic and suffers severly...."
And Jesus heals the boy because of the father's faith. Now, obviously, it was not possible for this boy to have faith in Jesus on his own. He was psychologically and spiritually disturbed (whether naturally or supernaturally); yet Jesus used the father's faith to make him whole again. So, if such a thing is possible with demonic possession, why should Baptism be any different?
Many retarded and/or insane people do not have the ability to reason so as to "accept Jesus as their personal Lord and Savior" (as the Evangelicals say ;-) Yet, didn't Jesus come to save them as well? Don't they need to be Baptized into Christ? (Rom 6:3; Gal 3:27)
Well, if so, then why should we assume that the ability to reason is necessary for Baptism? Why can't babies be Baptized before they reach the age of reason?
excerpt from "Infant Baptism"
by Mark J. Bonocore
The Church has been commanded to bring Christ to all, baptizing them in the name of the Father, and the Son, and the Holy Spirit, mentally retarded and children included... Why can't they be given a welcome into the Kingdom - keeping in mind that it is God who elects, not man. As I have already shown, God has been gracious enough to use the faith of another to heal or save someone else. Do not restrict God with man-made limitations.
Regards