It is a fundamental doctrine that a person who has been threatened with death or serious bodily harm and has reasonable grounds to believe that such threats will be carried into execution, has the right to arm himself in order to combat such an emergency. Whether the threats were made, or the accused had reason to believe they would be carried into execution, were questions to be determined by the jury. However, when a jury is told that the law presumes that a person using a deadly weapon to kill another acts with malice and throws upon the accused the burden of disproving malice, then the accused is entitled as a matter of law to have the jury instructed that he has overcome the presumption, if they believe the evidence offered in his behalf.

The court further tells the jury that when a person reasonably apprehends that another intends to attack him for the purpose of killing him or doing him serious bodily harm, then such person has a right to arm himself for his own necessary self-defense."

When a person reasonably apprehends that another intends to attack him or a member of his family for the purpose of killing him or a member of his family or doing him or a member of his family serious bodily harm, then such person had a right to arm himself for his own necessary self-protection and the protection of his family, and in such case, no inference of malice can be drawn from the fact that he prepared for it.