Virginia Model Jury Instruction (2013)
2.100 Reasonable Doubt and Presumption of Innocence
The defendant is presumed to be innocent. You should not assume the defendant is guilty because he has been charged and is on trial. This presumption of innocence remains with the defendant throughout the trial and is enough to require you to find the defendant not guilty unless and until the Commonwealth proves each and every element of the crime beyond a reasonable doubt. This does not require proof beyond all possible doubt, nor is the Commonwealth required to disprove every conceivable circumstance of innocence. However, suspicion or probability of guilt is not enough for a conviction.
There is no burden on the defendant to produce any evidence.
A reasonable doubt is a doubt based on your sound judgment after a full and impartial consideration of all the evidence in the case.