In Episode 6, Orpah, the mother of the giants, narrates the origin of the Nephilim, explaining that they are the offspring of fallen angels (the Watchers) who lusted after human women. These giants, known as 'men of renown and great ability,' are the children of these angels and humans. The fallen angels were punished and banished to eternal darkness, but their giant children remain hidden in caves, which raises questions for Goliath about why they still hide despite their power.

Episode 6 shows Goliath and his mother Orpah arriving in Gath, where Orpah explains the Nephilim's origins to Goliath. Their interaction reveals Goliath's curiosity and frustration about why they continue to hide despite their strength, indicating a complex dynamic between them as they prepare for war.

King Achish of the Philistines is shown recruiting Goliath and his giant siblings to join the Philistine army in preparation for war against King Saul and the Israelites. This recruitment sets the stage for the impending conflict and highlights Achish's strategic efforts to strengthen his forces.

In this episode, David is seen soothing King Saul's tormented spirit with music, deepening his role in Saul's court. Additionally, a fictional romance between David and Michal develops further, adding personal stakes to the unfolding political and military tensions.

Episode 6 acts as a bridge, pushing both David and Goliath closer to their fateful confrontation. It expands the biblical world by exploring the giants' backstory and shows the Philistine army preparing for war under King Achish's leadership. The episode builds tension by highlighting the growing threat of Goliath and the giants while showing David's increasing involvement in Saul's court and his own destiny.