(Through the Bible) Genesis 15-18 — Chuck Smith
In this sermon, the preacher focuses on the story of Abraham and his encounter with three men, who are believed to be angels. Abraham shows great hospitality to them, offering them water, food, and rest. The preacher emphasizes the importance of entertaining strangers, as we never know if we might be entertaining angels unaware. The sermon also touches on God's promise to Abraham that his descendants will be strangers in a foreign land and will be afflicted for four hundred years. The preacher suggests that this affliction may not necessarily be in Egypt, but rather a round figure of four hundred and thirty years from the time of God's promise.
Source: https://www.sermonindex.net/speakers/chuck-smith/through-the-bible-genesis-15-18/