Mathew 7:24, which if you think on what it says again, then you realize "in everything" isn't a small modifier (the wording Christ chose).
In effect it leads after conversion of the slave owner to Christian faith, next by the inspired command from above, to
Philemon (1 page, about 1-2 minutes to read) as the in-time outcome.
Bible Gateway passage: Philemon - New International Version
Notice how this outcome in
Philemon is better than the United States now.
The slave became not only free, but the
full social equal, no less, to his former master. (And in time a Bishop)
Are we today up to that level nationally in the U.S.? Well, it's mixed. Partial. Less perfect than the
Philemon level.
We don't fulfill the Christian ideal in the U.S. of true and full social equality, else police wouldn't execute so many black people on the street under color of law, school districts in states wouldn't be some rich, some so underfunded, etc.
If you read the Bible you can see progressions, which make sense, because if nations progress, they do it gradually.
If not gradual then why so
many laws in lieu of Mathew 7:24? Consider for yourself what is needed without Mathew 7:24:
Maryland Rape and Sexual Assault Laws - FindLaw
Did you look? That's "progression" over time of law, just like the Old Testament: accumulating baby steps, more and more micro regulation.
This is why we need conversion to bring about heaven. Only true faith actually makes Mathew 7:24 happen when it's less an advantage to do....