Huh?
All people ... at some point in their lives ... "see only what they want to see" Ergo ... the idiom "Love is Blind"
This "blindness" may last a short time or a lifetime. Neural pathways and circuitry ossify across time and space.
For example:
About 2.3 billion people will celebrate Christmas in a few days ... how many more who won't celebrate are at least aware of the celebration.
These 2.3 billion people are not really celebrating the birth of Jesus ... rather a proxy ... the proxy being the timeless celebration of the Winter Solstice... Stonehenge in UK about 5,000 years ago ... the Yin Yang in China likely about the same time.
How many of these 2.3 billion people are conscious of this fact? How many still live in the shadow of separate(ness)?
... and what is the essence of the celebration?
Temporarily setting aside "Separate(ness) and embracing "Together(ness)
The above celebration has occurred ... and continues to occur ... among all peoples ... everywhere ... throughout human history.
This phenomenon can only point to one conclusion:
John 17:21
"That they all may be one"
I understand ... perhaps incorrectly ... the migration journey of the Monarch Butterfly spans thousands of miles and several generations ... and all this without road maps, road signs, books or GPS. A marvel worth pondering?
The human species is also engaged in a migration journey that spans countless miles and countless generations ... aided by road maps, road signs, language, books and GPS.

Huh?
From the City of God ---> to the City of Man ---> Back to the City of God.