אַל־תִּשְׁטְפֵ֤נִי ׀ שִׁבֹּ֣לֶת מַ֭יִם וְאַל־תִּבְלָעֵ֣נִי מְצוּלָ֑ה וְאַל־תֶּאְטַר־עָלַ֖י בְּאֵ֣ר פִּֽיהָ׃
큰 물이 나를 엄몰하거나 깊음이 나를 삼키지 못하게 하시며 웅덩이로 내 위에 그 입을 닫지 못하게 하소서
Rashi
Whose right arm was immobile. Yonasan renders "A man whose right arm was shrunken." "Gamid" in the Aramaic always indicates something shrunken by disease, "retrait", "shrunk" in old French. He could not utilize his right arm. In Hebrew, "closed", as in "Let not the well close its mouth over me."4Tehilim, 69:16. His right arm was "closed"—he could not utilize it.
Metzudat Zion
A matter of contraction as in Psalm 69: 16 "Don't let the mouth of the Pit not close over me." It is to say it is as if his right hand was contracted because he didn't extend it.
Rashi
With shriveled right arms. Their right arms were shrunken. They could not utilize them, as if they were closed, as in "Let not the well close its mouth over me."3Tehilim, 69:16.