A saint is someone who has the 100% perfect righteousness of God imputed on them. 100% perfection is not achievable by any form of good works a man does. There are many sins every human being do every single day, knowingly and un-knowingly.
The belief that those who forbid to marry or stay away from people or live in a mountain are saints is a false pagan belief. Those people are still sinners. Doing the wrong thing is a sin and not doing the right thing is a sin as well.
Every person who has accepted the free Gift of Salvation and the righteousness of Christ imputed on them is a saint.
Here is the Truth about the only living God and our eternal destiny.
We are all sinners and we rightfully deserve Hell.
But, the good news is that there is a way to Heaven. Jesus said, " I AM THE WAY,THE TRUTH AND THE LIFE" . By freely receiving His perfect righteousness imputed on us, through faith in Him, we can go to heaven.
JESUS PAID IT ALL. Those who truly believes, will receive the Gift of Eternal Life.
How to be sure of being saved or going to Heaven?
1) Believe in the One True God(God - The Father,God - The Son,God - The Spirit) and accept