John Gill Commentary 2 Samuel 1:7

"And when he looked behind him, he saw me, and called unto me. And I answered, Here am I." — 2 Samuel 1:7 (ASV)

And when he looked behind him
To see how near the enemy was, and who were pursuing him:

he saw me, and called unto me ;
by which it should rather seem that he belonged to the Philistines than to the Israelites, and as his being an Amalekite shows; for such an one would hardly be admitted among the latter, though it is most likely he was with neither, but happened to come that way just at that time:

and I answered, here [am] I ;
ready to hear what you have to say, and do your pleasure.