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.

Thus they made a covenant at Beersheba. So Abimelech rose with Phichol, the commander of his army, and they returned to the land of the Philistines. Then Abraham planted a tamarisk tree in Beersheba, and there called on the name of the Lord, the Everlasting God. And Abraham stayed in the land of the Philistines many days. (Gen 21,32-34)

The visit of the Abimelech and Phichol to Abraham was by no means a warm reunion of old friends. Rather, it was forced by the need to find reconciliation and to establish mutual boundaries, both geographical and in terms of how the two sides would deal with each other. It is not for no reason, therefore, that it is mentioned that as soon as the agreement was achieved, the two guests returned "at once" to their land. Neither side felt any need to prolong the meeting.

Abraham breathed a sigh of relief. He was glad to be able to stay in this place, now when it was obvious that the Philistines were not going to get any closer than was necessary. After their commanders left, he realized again with gratitude that his God would accompany him on his travels. After all, if it hadn't been for that, things could have gone very badly with him, the conflict having nearly flared up at least twice. So he did something which was already a characteristic part of his life, but this was especially true after significant events. He had done it so many times, and yet the Scriptures do not fail to mention it about him again: he "called on the name of the Lord, the everlasting God."

Abraham built altars and called upon God throughout the land that God had promised him. In this sense, he omitted Egypt, which did not belong to him, but did not exclude the land of Philistines. For God had told him of all that land, including Gerar, that it would belong to his descendants; he could not yet give it to them, but he was already entrusting it to his God. He already understood well that this gift, which God had given him, was not just there for his descendants to enjoy. The land was, moreover, to fulfill the higher purpose of the eternal God - to be a revelation of His glory to the whole world.