The answer is: Negev

Genesis 20:1 - After their time in Egypt, Sarah and Abraham settled in the Negev, specifically near the region of Gerar where they encountered Abimelech.

After leaving the bustling lands of Egypt with all its complexities and challenges, Sarah and Abraham found a stark change of scenery in the Negev. This arid, desert-like region in southern Israel has a fascinating history and is often overlooked. Despite its dry climate, it's an area rich with potential and beauty, representing the promise of prosperity away from Egypt’s past.

As they settled near Gerar, the couple encountered Abimelech, the king of the Philistines. This meeting wasn't just an incidental encounter; it reveals how Abraham and Sarah's journey was more about divine purpose than mere geography. Abimelech’s interactions with them remind us of the sometimes unpredictable nature of faith and the responsiveness of different nations to God’s workings through His people.

Trivia time! The Negev is often referred to as the "desert unlocked." Isn't that a fun description? It highlights that even in what seems like desolation, there's true life and opportunity with a little exploration and faith. Also, it's worthwhile to know that throughout the Bible, the Negev plays host to many significant events and figures, serving as a spiritual crossroads.

One remarkable echo in the biblical narrative is that later generations of Israelites faced a similar situation as they wandered in the wilderness, leaving behind what they knew for the sake of spiritual and communal growth. Ultimately, every detour in their journey, including the Negev, was a stepping stone toward understanding their covenant with the divine and fostering deep-rooted faith.