There have been many instances in the news where a mother has abandoned her newborn child. Sometimes in front of a home, maybe a hospital parking lot or even in a garbage dumpster. This makes us angry. We become outraged at the selfishness and irresponsibility of the poor excuse of a mother.
How often does the church do the same thing. Someone comes to Christ in repentance and we celebrate, we baptize them and we put them in a Sunday School class. But how often do we really take them along and personally show them how to feed on the spiritual milk of the Word. If they have recently been born again, then they are truly infants in Christ. They do not know how to walk spiritually yet.
Like a newborn baby needs someone to care for them, to clothe them, to clean them and to feed them; so a new Christian needs to be clothed, cleansed and fed by the Word of God. They can not do this on their own at first, they must learn - from the spiritually mature.
Go therefore and make disciples.