(CNN) Minor League Baseball player Blake Bivens wrote a heartfelt message to his wife, son and mother-in-law, who were found dead in a home in Virginia

The bodies of Joan Denise Jefferson Bernard, 62, Emily Bernard Bivens, 25, and Cullen Micah Bivens, 14 months, were discovered Tuesday morning.

Matthew Thomas Bernard, the brother of Bivens' wife, has been arrested and charged with three counts of first-degree murder, authorities said.

Bivens spoke out about the loss in an Instagram post Thursday.

"Two days ago my heart was turned to ash. My life as I knew it is destroyed," he said. He posted a series of photos and spoke to each of his slain family members in the caption.