A pregnant woman on Wednesday was dealing with the deaths of her husband and her 4-year-old son in a Lithonia house fire.

"I don't have strength, but God's strength is perfect and that's what I'm going off of," Seamona Stewart told Channel 2 Action News.

Fire investigators said Darryl Stewart and son Nathan Stewart were found Tuesday night inside a car in the garage of the home in the 2300 block of Wellborn Hills Place. Investigators believe the fire started in one car and spread to another, and then to the house, Channel 2 said.

DeKalb Fire Chief Edward O'Brien described the blaze as “odd.”

Neighbor Tamika Linder told The Atlanta Journal-Constitution that she noticed the fire just after 8 p.m. "When I finally realized what was going on, I heard the fire sirens in the area," she said.

Linder said the wife arrived on the scene as the house was burning.

"I was standing close to her when [the medical examiner] arrived," she said. "When she saw him, she lost it."

Seamona Stewart, who was married to Darryl Stewart for 11 years, told Channel 2 that she would make sure her husband's memory is a presence in her unborn child's life.

"I'm four and a half months [pregnant]," she said. "And my focus is now bringing this child into the world and making sure he or she knows who his father was."

The investigation into the cause of the fire was continuing.

--Dispatch editor Christopher Seward contributed to this report.