See Clearly: How do you know that your perspective on something is correct? A 6 is a 6…unless you look at it upside down, in which case it appears to be a 9. Has the truth changed, or only how you see the truth? In Luke 6, when Jesus tells us not to judge others, most people stop right there. It isn’t a bad idea – don’t judge others – in fact it’s a really great thing.