Complex sentence: In order to send a message to Rick and his group, Negan beats one of the group members to death although the identity of the victim is not revealed as the death is shown from the point of view of the character.
Split into simpler sentences: In order to send a message to Rick and his group, Negan decides to beat one of the group members to death. Although the identity of the victim is not revealed as the death is shown from the point of view of the character.