See what perfect insubordination would everywhere follow if every one who is oppressed, or believes himself to be oppressed, should flee: children would desert their parents; husbands and wives would flee from each other, at any supposed or real grievance.

This is not the Christian rule.

Patience and all long-suffering, obedience, endurance, committing one's self to him that judgeth righteously, is the temper and spirit of the Gospel.

This is the tone-note of the Sermon on the Mount.

At the same time, who blames or judges harshly a man in peril of his life if, in self-defence, he flees?
I say that Paul would probably judge every fugitive slave case by itself.