In addendum: Fr. Keating in referring to the invitation to the wedding feast in the Gospels suggests that not receiving the invitation as a gift is tantamount to rejecting it altogether. A pastor of a conservative parish once said in a homily that salvation is a gift. although we like to think we earn it. Of course, there are the Gospels and the Epistles. 
     Then their is the Capuchin chaplain while I was an undergrad. who said: "Going to church will make you a Christian in the same way sleeping in a garage will make you a car".  The point being that I am not speaking only on my own authority. Furthermore I don't believe you must be a Christian to be saved-only do the will of the Father as Jesus taught- no judgement is implied.