Meyer and her son Danny, who works for Joyce Meyer Ministries and also testified via videotape, said Chris Coleman would have been fired for adultery but not for divorce, the Belleville News-Democrat reported.
Coleman was Joyce Meyer's security chief until his arrest.
The bodies of Sheri Coleman and the couple's two sons were found in their home in Columbia in May 2009. Prosecutors say Coleman killed them because he wanted to continue an affair with his wife's best friend, Tara Lintz, without risking his job.
Coleman's lawyers say someone broke into the house while he was working out at a gym.
The other witnesses Friday included three Joyce Meyer employees who were friends with Sheri Coleman. They testified about Sheri Coleman's concerns about her marriage, and one told the jury about finding calls to Lintz in the records for Chris Coleman's work cellphone.