(idiomatic) actually, in truth

a good deed is its own reward

Alternative form of let him who is without sin cast the first stone

Alternative form of virtue is its own reward

Only those who are faultless have the right to pass judgment upon others (implying that no one is faultless and that, therefore, no one has such a right to pass judgment).

(idiomatic) It is snowing.

coloured a greyish yellow

In a battle or dispute, attacking the opposition first is better than waiting for them to attack.

Information has been released that will have ongoing consequences. / Something has been brought into reality that cannot be eliminated or undone.

(idiomatic, simile) Alternative form of as if there were no tomorrow