The classic Israel itinerary is 10 days / 9 nights, covering Jerusalem, the Galilee, the Dead Sea, Bethlehem, and the Mediterranean coast. It's comprehensive, well-paced, and fits most church group budgets.
A 13-day trip adds 2–3 days in Jordan, typically including Petra (a full day), Wadi Rum (overnight in a Bedouin camp), Mount Nebo, and the Jordanian side of the Jordan River baptism site. The additional cost is $800–$1,200 per person (including border fees, hotels, and Petra entrance).
Choose 10 days if: This is your first trip. Budget is a primary concern. Your group skews older or has mobility concerns (Petra requires significant walking). You want a focused, unhurried Israel experience.
Choose 13 days if: You want the "wow factor" of Petra. Your group is adventurous. You have repeat Holy Land travelers who've seen Israel before. You want the Moses narrative (Mount Nebo) and the desert experience (Wadi Rum).
Both options are excellent. A 10-day trip is not "less than" — it's focused. A 13-day trip is not "too long" — it's expansive. Match the length to your group's interests and capacity.