We naturally are inclined to love and be kind to those who are kind to us. But Jesus tells us to love even those who are cruel to us and hate us. This is the way our Father wants us to behave.
We need to be different from those who treat others the way they are treated. In doing so we are being godly, acting according to His will, and are thus "children of God".
We all live in the same world, under the same rules. God treats us with goodness regardless of whether we are evil or good. (this interpretation seems to fit best within context, but I'm not so sure about it. Insight appreciated)
Now go back and read what Jesus said, and realize He said it a lot better.
A family-friendly social network (Mastodon instance) devoted to the new life found in Christ.