Wisdom 19:16. "[B]ut the latter, after receiving them with festal celebrations, afflicted with terrible sufferings those who had already shared the same rights." The "latter" here are the Egyptians, who welcomed the Jews into their country when others refused to receive them, but eventually made them into slaves. 

The Jewish slaves had "already shared the same rights" as their Egyptian oppressors. We know now, or at least say that we know,  that we all share the same rights, every single one of us is endowed with natural rights from our Creator, and therefore we do not get to use other people for our own ends. Yet this passage can be seen to relate to so many of our relationships, because we still do this all the time - we afflict others, who share our rights, with terrible sufferings. One parallel example right now is immigration. We are welcoming immigrants into our country, even encouraging them to come illegally, beyond the numbers that we can handle, to their and our citizens' detriment, for motives other than pure hospitality and love of neighbor. Many of the powerful, I believe, hope to use these people for cheap labor. These immigrants share the same rights we do, and deserve the same freedom we have. God will protect them and secure justice for them, just as He did for the Jews, but He will also bring to justice those who lie to and mistreat them.

Beyond this obvious case, though, there are many more subtle ways we treat others this way. For example, think of a marriage where a couple holds a "festal celebration," but eventually end up afflicting each other with "terrible sufferings." We can fall into these kinds of relationships with our children, friends, and anyone else. We welcome people into our lives, often with great joy, but can easily end up using them - only valuing them for what they can do for us, and turning on them when they do not behave the way we want them to. We fail to acknowledge that they are our equals, sharing our same rights, and thus bring suffering on all of us, just as the Egyptians did.

We can and do behave much like the Egyptians did with the Jews in many of our relationships, both individually and at the societal level. This verse from Wisdom warns us to see that in ourselves, and resist it, lest we justly suffer for our wicked acts (Wisdom 19:13).