These are fascinating pictures. ‘If thieves come to thee, if robbers by night, (how art thou cut off!) would they not have stolen till they had enough?’ The words in backets are a parenthesis that interrupt the question half way through.
When God deals with Edom, it won't be like a physical plunderer or thief. They will lose the lot, everything. And so will we. When we live away from God, the end of all this is death, and death means you are left with nothing. It isn't just a disease which leaves you with little of your health or an accident. It isn't just that you are a businessman and you are well-to-do, but your company crashes or the firm for which you work for goes bankrupt, and you are left jobless. Death means you lose everything. Absolutely nothing is left. No substance, no life, no breath, no pleasure, no rights, no authority. Nothing is left. Edom is reminded of this. When God deals with them, there won't be anything left. It will be a final and total termination.
This is said to jar our souls. Even if people came to steal the harvest, if the grape gatherers come to thee, they don't take everything. They're not interested in spending hours and days in the fields. All they want to do is take the bulk of things. Afterwards, you could still say, ‘We've lost our fortune, we've lost everything, but if we glean among what's left, we'll find something. We won't starve; we will survive.’ God takes everything in the end, in the last day, and there will be nobody to help us when God deals with us. ‘You are isolated’, says the Lord. ‘Oh, but my family will help me.’ How can your family help when God calls you into eternity? What can they do to hold back your soul and keep you in life and from judgment? You are on your own. Nobody, no force on earth or in hell can help us. And even that vital little fact is noted.