The husband of a fitness instructor killed in a Texas church has said he has found peace in the tragedy by "leaning on God".

Terri "Missy" Bevers was killed last month at the Creekside Church of Christ, Midlothian, last month, where she was found with puncture wounds to her head and chest.

A suspect wearing a SWAT uniform carrying tools that fit the injuries she suffered was caught on CCTV inside the church, but no arrests have been made.

"If it wasn't for me leaning on God as heavily as I am right now, OK, there is no way - I would be melted just into this asphalt," Brandon Bevers told NBC News from outside a police station in Texas.

"There is no way that Brandon Bevers before this would be standing here today without me leaning on God, and His word and His direction, like, I find peace in it. It's very comforting. I obtain wisdom from it."

Bevers explained that he has so far refused to read any reports detailing the attack, saying, 

"I haven't ever read it, so don't divulge. I haven't even read the story."

Missy Bevers was found dead on April 18 at around 5am by one of her clients who was planning to attend her bootcamp scheduled for that morning in the church.

Authorities have said they found signs of forced entry into the church and that Bevers may have interrupted a robbery while preparing for her Camp Gladiator fitness class.