IndividualFreedom said:
"I heard him say he was going to kill me and I feared for my life"
In Texas you don't have to be in fear for your own life to use deadly force.
Sec. 9.42. DEADLY FORCE TO PROTECT PROPERTY. A person is justified in using deadly force against another to protect land or tangible, movable property:
(1) if he would be justified in using force against the other under Section
9.41; and
(2) when and to the degree he
reasonably believes the deadly force is immediately necessary:(A) to prevent the other's imminent commission of arson, burglary, robbery, aggravated robbery, theft during the nighttime, or criminal mischief during the nighttime; or
(B)
to prevent the other who is fleeing immediately after committing burglary,
robbery, aggravated robbery, or theft during the nighttime from escaping with the property; and
(3) he
reasonably believes that:
(A) the land or
property cannot be protected or recovered by any other means;
or(B) the
use of force other than deadly force to protect or recover the land or property would expose the actor or another to a substantial risk of death or serious bodily injury.