holy in the verse you quoted is the meaning “set aside” not Holy as in God’s Perfection. Man CANNOT reach perfection on this earth.
If you think you can be HOLY as in God’s Holyness on earth, please let me know, there are a lot of people who can watch you as an example.
The only human who was ever perfect was Jesus.
If you argue we CAN be holy as in God’s standard, then we are all failing, no? Why would God command us to be something we can’t?
We cannot, this side of Heaven, yet Jesus commands it.
Matthew 5: 48 So be perfect,* just as your heavenly Father is perfect.d
So what are you going to do? Ignore Him?