וְעָפ֨וּ בְכָתֵ֤ף פְּלִשְׁתִּים֙ יָ֔מָּה יַחְדָּ֖ו יָבֹ֣זּוּ אֶת־בְּנֵי־קֶ֑דֶם אֱד֤וֹם וּמוֹאָב֙ מִשְׁל֣וֹח יָדָ֔ם וּבְנֵ֥י עַמּ֖וֹן מִשְׁמַעְתָּֽם׃
At sila'y lilipad nang mabilis, balikat sa balikat, laban sa mga Filisteo sa kanluran; magkakasama nilang sasamsamin ang mga anak ng silangan; iuunat nila ang kanilang kamay sa Edom at Moab, at ang mga Ammonita ay susunod sa kanila.
Tze'enah Ure'enah
“They will pounce on the back of Philistia, etc.” [11:14]. And Israel will run quickly as if they were flying with wings at the Philistines to kill them and destroy their god. Israel will also rob and kill Edom, Moab, and Ammon.
Rashi
And they shall fly of one accord against the Philistines in the west Heb. בְכָתֵף. Israel will fly and run of one accord against the Philistines who are in the west of Eretz Israel and conquer their land. [כָּתֵף, lit. a shoulder, is used in this case to denote unity. The word שֶׁכֶם, also lit. a shoulder, is used in a similar sense.] Comp. (Hoshea 6:9) “They murder on the way in unison (שֶׁכְמָה)”; (Zeph. 3:9) “One accord (שְׁכֶם אֶחָד).” And so did Jonathan render it: And they shall join in one accord to smite the Philistines who are in the west.
Ibn Ezra
ועפו According to some, And they will spread;19A. V. They shall fly, flying.19A. V. They shall fly, flying. comp. מגלה עׁפה A roll that was spread (Zach. 5:1). According to R. Moses Hakkohen it is hapax legomenon, and means they will rest. פלשתים Supply מקום or ארץ The place, or the land of the Philistines.
Rashi
and the children of Ammon shall obey them As the Targum states: Will hearken to them. They will accept their commandments over them.