And Abraham stayed in the land of the Philistines many days. (Gen 21,34)

Being someone's guest is usually a pleasant experience. You can take a break from all the worrying and cooking that you would have to do at home and enjoy what your host has prepared for you. (And they have it usually very tidy too!)

But we have shown that Abraham's stay with the Philistines did not fall into this category. The Philistines had not invited him, and certainly had no plans to host him. Shortly after he arrived, because he had no choice (the drought drove him to it), they let him know who was here boss when Abimelech had Sarah brought in. Abraham clearly did not enjoy his stay in their land, but from the beginning was in fear for his own life. At his age, he was no longer naive, and he was not wrong. It could have ended badly for him.

When God supernaturally intervened, Abraham gained the respect of the Philistines, so they didn't dare touch him, but he was still only a tolerated guest. This is how the verse should be understood: he is called "a guest" because he was outside his home country, but in reality he was a stranger here.

But even in the original area of the Promised Land where he was staying, he did not have a home of his own in the sense we understand it, on an own piece of land or in his own apartment, with security, a legal environment, and hot water to turn on the tap. What faith had settled in his heart that he could see beyond the boundaries of his own life and believe that it was in these places that his descendants would one day be not just guests like him, but truly at home. He did not feel handicapped - because he believed. "These all died in faith, not having received the promises, but having seen them afar off were assured of them, embraced them and confessed that they were strangers and pilgrims on the earth....But now they desire a better, that is, a heavenly country. Therefore God is not ashamed to be called their God, for He has prepared a city for them." (Heb 11,13.16)

Probably the older a person gets, the more he realizes that he, like Abraham, is only a guest on this earth and in this life, and his true home is really elsewhere.