committing to christianity means that u believe in the Father,
Holy Spirit, and the Son. so u believe in the Word of God. nothing
else.
the Bible states clearly that one can be uncircumsized and yet
circumsized and circumsized and yet uncircumsized. u can do
something, but if your heart isnt in it, its pointless. therefore,
as long as u believe, u r committed. going to church is all good,
but if u dun go, hey, dun go! 
they ask u to grow up, its just because they are quite sore that u
arent committed (in their own definition), and wanna oust u from
their circle (prev poster).