"The worst sin"Translation exercise; All levels .
El peor pecado es ser, indiferente.
The worst sin is to be indifferent.
George Bernard Shaw
Please correct my sentence .
Try not to be indifferent to this statement

7 Answers
A literal translation would be: "The biggest disdain/scorn lies in not paying any attention". We say that when we are mad to at someone and we choose not showing to show our anger as a symbol of disdain. Because indifference can be much more hurtful than words.
The closest English idiom that I found is "Don't pay any attention to the critics. Don't even ignore them!"
[Feel free to correct my English. Thank you]
Sin is to miss (fall short or come short of) the mark, the goal.
Since sin is often associated with the Bible, I refer to all my studies of the Scriptures. In regards to both words, I learned that sin is falling short, while transgression is a willful act against.
Indifference is a voluntary act to ignore all signs, suggestions, and outright notices. To the rest of the world, indifference can be seen as sin, but inside the heart, the individual, indifference is nothing short of transgression.
My Spanish translation attempt (of the whole explanation):
El pecado significa fallar el marco, el objectivo. En la Biblia, donde el pecado está usado mucho, hay una otro palabra, la transgresión y significa un acto deliberado contra una otra persona o la instrucción.
Está indiferente significa un acto deliberado ignorar todo. Las personas ven la indiferencia como el pecado, pero en la corazón de la persona, la indiferencia está toda una transgresión.
Sin is sin, one sin isn't worse than another, it all hurts. El pecado es el pecado, un pecado no es peor que el otro todos duelen.
From my quotes book
Indifference may not wreck a man's life at any one turn, but it will destroy him with a kind of dry-rot in the long run.
Bliss Carman
La indiferencia no puede destruir la vida de un hombre en una sola vez, sino que lo destruirá con una especie de putrefacción seca en el largo plazo.
No estoy de acuerdo. Para mi los péores pecados son los que son contra niños, secuestro y abuso sexual.
I don't agree. For me the worst sins are those that are against children, kidnapping and sexual abuse.
Estoy de acuerdo con Gringo, hay muchas cosas peores que la indiferencia, por ejemplo el abuso sexual de niños pero la indeferencia de las madres que fingen que no saben nada sobre esta cosa es algo terible, también.
I agree with Gringo that there are many things that are worse than indifference, for example sexual abuse of children. However, the indifference of the mothers who pretend not to know anything about this, is something awful too.
El peor pecado es traicionar a un amigo
The worst sin is to betray a friend