The song in the video, sung by Sophie Milman, is "Eli, Eli" - a poem written by Hannah Senesh and set to a melody composed by David Zahavi.
Senesh (1921-1944) was a Jewish parachutist who was captured by the Nazis and their collaborators in Hungary in 1944. After subjecting her to months of torture, through which they tried and failed to get information out of her about her mission, they executed her by firing squad.
Here's an English translation from the Hebrew of "Eli, Eli":
My God, my God,
May these things never end,
The sand and the sea,
The murmur of the water,
The lightning of the heavens,
The prayer of man.
May these things never end,
The sand and the sea,
The murmur of the water,
The lightning of the heavens,
The prayer of man.
אלי, אלי
שלא יגמר לעולם
החול והים
רשרוש של המים
ברק השמים
תפילת האדם
שלא יגמר לעולם
החול והים
רשרוש של המים
ברק השמים
תפילת האדם
