And it came to pass, when David and his men were come to Ziklag on the third day, that the Amalekites had invaded the south, and Ziklag, and smitten Ziklag, and burned it with fire;

And it came to pass, when David and his men were come to Ziklag on the third day, that the Amalekites had made a raid upon the South, and upon Ziklag, and had smitten Ziklag, and burned it with fire,

Now when David and his men were come to Siceleg on the third day, the Amalecites had made an invasion on the south side upon Siceleg, and had smitten Siceleg, and burnt it with fire.

And it cometh to pass, in the coming in of David and his men to Ziklag, on the third day, that the Amalekites have pushed unto the south, and unto Ziklag, and smite Ziklag, and burn it with fire,

Now when David and his men came to Ziklag on the third day, the Amalekites had made an attack on the South and on Ziklag, and had overcome Ziklag and put it on fire;

It happened, when David and his men had come to Ziklag on the third day, that the Amalekites had made a raid on the Negev, and on Ziklag, and had struck Ziklag, and burned it with fire,

And when David and his men had arrived at Ziklag on the third day, the Amalekites had made an attack on the south side against Ziklag. And they had struck Ziklag, and burned it with fire.

On the third day - This indicates that Aphek was three days' march from Ziklag, say about 50 miles, which agrees very well with the probable situation of Aphek (1-Samuel 4:1 note). From Ziklag to Shunem would not be less than 80 or 90 miles.
The Amalekites, in retaliation of David's raids 1-Samuel 27:8-9, invaded "the south" of Judah Joshua 15:21; but owing to the absence of all the men with David there was no resistance, and consequently the women and children were carried off as prey, and uninjured.

On the third day - This was the third day after he had left the Philistine army at Aphek. Calmet supposes that Aphek was distant from Ziklag more than thirty leagues.
The Amalekites had invaded - These were, doubtless, a travelling predatory horde, who, availing themselves of the war between the Philistines and the Israelites, plundered several unprotected towns, and among them Ziklag. It is likely they had not heard of what David did to some of their tribes, else they would have avenged themselves by slaying all they found in Ziklag.

And it came to pass, when David and his men were come to Ziklag on (a) the third day, that the Amalekites had invaded the south, and Ziklag, and (b) smitten Ziklag, and burned it with fire;
(a) After that he departed from Achish.
(b) That is, destroyed their city.

And it came to pass, when David and his men were come to Ziklag, on the third day,.... Either from their departure from thence, when they went out with Achish, or rather from the time of their leaving Achish, and the camp of the Philistines; so long they were upon their march homewards, see 2-Samuel 1:1; and no wonder, if it was the distance of eighty eight miles; see Gill on 1-Samuel 29:11,
that the Amalekites had invaded the south, and Ziklag; the southern parts of the land of the Philistines, and of Judah, as appears from 1-Samuel 30:14; taking the opportunity of the Philistines being gone into the land of Israel, and particularly of David's absence from Ziklag, to whom they bore a grudge for his invasion, destruction, and spoil of them not long ago, see 1-Samuel 27:8,
and smitten Ziklag, and burnt it with fire; not that they smote the inhabitants of it, there were no men in it, and the women and children they carried captive; but they demolished the buildings in it, pulled down the houses after they had rifled them, and burnt them with fire, that David and his men might dwell there no more.

When we go abroad in the way of our duty, we may comfortably hope that God will take care of our families in our absence, but not otherwise. If, when we come off a journey, we find our abode in peace, and not laid waste, as David here found his, let the Lord be praised for it. David's men murmured against him. Great faith must expect such severe trials. But, observe, that David was brought thus low, only just before he was raised to the throne. When things are at the worst with the church and people of God, then they begin to mend. David encouraged himself in the Lord his God. His men fretted at their loss, the soul of the people was bitter; their own discontent and impatience added to the affliction and misery. But David bore it better, though he had more reason than any of them to lament it. They gave liberty to their passions, but he set his graces to work; and while they dispirited each other, he, by encouraging himself in God, kept his spirit calm. Those who have taken the Lord for their God, may take encouragement from him in the worst times.

THE AMALEKITES SPOIL ZIKLAG. (1-Samuel 30:1-5)
Amalekites had invaded the south, and Ziklag, and smitten Ziklag--While the strength of the Philistine forces was poured out of their country into the plain of Esdraelon, the Amalekite marauders seized the opportunity of the defenseless state of Philistia to invade the southern territory. Of course, David's town suffered from the ravages of these nomad plunderers, in revenge for his recent raid upon their territory.

During David's absence the Amalekites had invaded the south country, smitten Ziklag and burnt it down, and carried off the women and children whom they found there; whereat not only were David and his men plunged into great grief on their return upon the third day but David especially was involved in very great trouble, inasmuch as the people wanted to stone him. But he strengthened himself in the Lord his God (1-Samuel 30:1-6).

The south - Namely, the southern part of Judah, and the adjacent parts.