There's no clear indication that it's a sequel. It might just be a different take on the Firewatch concept, exploring different aspects of the setting or characters in a visual novel format rather than as a traditional game sequel.
Delilah was a significant figure in the Delilah and Samson story. She was sort of a femme fatale. The Philistines saw an opportunity in her to undermine Samson. They offered her a large sum of money. She was able to manipulate Samson into telling her about his hair being the source of his strength. This ultimately led to Samson's capture and the loss of his power at that time. She is often seen as a symbol of betrayal in this story.
Samson was a man of great strength. He was a Nazirite, which meant he had certain religious restrictions and was blessed with extraordinary physical power. Delilah was a woman who was bribed by the Philistines. She was used to find out the secret of Samson's strength so that the Philistines could defeat him.
Samson was a powerful Israelite figure. He had superhuman strength and was supposed to be a defender of his people. Delilah, on the other hand, was a woman from the opposing Philistine side. She was used by the Philistines to bring down Samson. She was cunning and managed to coax the secret out of Samson through her wiles.
Well, 'Hey There Delilah' is about a long - distance relationship. The songwriter was probably inspired by his own feelings of longing for someone. He uses the name Delilah, which gives the song a very personal touch. It's like he's whispering his love directly to her over the distance, and that's why it strikes a chord with so many people who have been in similar situations.
Well, a 'Firewatch Visual Novel' could be centered around the experiences of the firewatchers. It may include elements like their daily routines, the isolation they feel, and any strange events they encounter in the woods. It might also explore the beautiful yet somewhat eerie landscapes that are characteristic of the Firewatch setting.