Neither shouldest thou have stood in the crossway, to cut off those of his that did escape; neither shouldest thou have delivered up those of his that did remain in the day of distress.
Stood in the crossway, to cut off those of his (Judah's).
That did escape. The Jews naturally fled by the crossways (Maurer translates, 'narrow mountain passes') well known to them, to escape to the desert, and through Edom to Egypt; but the Edomites stood ready to intercept the fugitives, and either kill or 'deliver them up' to the foe.
Neither shouldest thou have delivered up - or 'shut up' - i:e., intercept, prevent the escape of, so as to deliver them up. Thus Edom, from malicious looks, proceeded on to malicious words, and from words to deeds-deeds of covetousness, spoliation, and murder.