I am looking in the Bible for examples of opposites working together or doing good for one another.?

Rahab the harlot hid the two spies in Jericho. They gave her a scarlet cord to hang out of her window to be saved. She and her family were the only ones saved as the walls fell down. She is listed in the family bloodline of Jesus. I think of Daniel taken captive twice. First to Babylon, and then to Medo Persia. He served both faithfully when they didn't come between him and God's Word. Then Joseph was sold as a slave by his brothers. He was accused of being inappropriate with a government official's wife. He spent a few years in prison. He saved all of Egypt and the surrounding countries, including the lives of his brothers from starvation.