Religious people often tend to "oversell" religion
Overstate its merits
This ironically strengthens the arguments of atheists
If the case made is more modest, you will find more buyers
If you make arguments like - "Chant this stotra everyday, it will keep your troubles away", you make a bad case
So many people in India blithely say - "Ved mein sab kuch hai"
Arre...waise bolenge, to hasenge log
Instead you study Shruti keenly and articulate what's timeless about it and skip the "not so timeless" bits, you will catch more attention