Can you see it?
All those side-by-side pictures on social media. How fast can you find what's different? For us who are "in the world but not of it", difference-seeing is an important skill.
What's of God's kingdom? And what's of the world?
Jesus shows us what God's kingdom is like (Parables, the Sermon on the Mount, the Great Commandment, the Great Commission, his own life). The Apostle Paul does too (1 Corinthians 13 and Galatians 5, for example). They draw the contrast so we will do the same in our own time and place. Can you see it?