וּפֵרַ֤שׂ יָדָיו֙ בְּקִרְבּ֔וֹ כַּאֲשֶׁ֛ר יְפָרֵ֥שׂ הַשֹּׂחֶ֖ה לִשְׂח֑וֹת וְהִשְׁפִּיל֙ גַּֽאֲוָת֔וֹ עִ֖ם אָרְבּ֥וֹת יָדָֽיו׃
און ער װעט אױסשפּרײטן דערין זײַנע הענט, װי אַ שװימער שפּרײט אױס צום שװימען; אָבער מע װעט דערנידערן זײַן גאװהמיט די קונצן פֿון זײַנע הענט:
Radak
Their line is gone out through all the earth: – Their line, i.e. (the line) of their construction; and so (in the verse) “line upon line” (Is. 28:10), because the structure is made by stretching out the line. He means that the work of the spheres and constellations has gone out into all the earth. And so
Rashi
water for swimming [Heb. שָׂחוּ,] noer in O.F., to swim, water that one must swim in and not cross by foot lest it overpower him. שָׂחוּ means swimming, like (Isa. 25:11): “as the swimmer spreads out [his hands] to swim הַשׂחֶה לִשְׂחוֹת.”
Radak
I am weary with my groaning; Every night make I my bed to swim; I melt my couch with my tears. – For I groan and am anxious on account of my sickness and weep until I make my bed swim every night, because at night the sickness is grievous, and a man laments and weeps on account of his sickness. Or he weeps at night because the household is asleep and no one sees him. And lo! he is weary with groaning and with weeping. And as for what he says: I make to swim and I water – it is by way of exaggeration and hyperbole. And the interpretation of אשחה (I make to swim) is (to be derived) from (such passages) as: “as he that swimmeth (השחה) spreadeth out his hands to swim (לשׂחות)” (Is. 25:11); or from the Targum (rendering) of “and he washed (וירחץ)” (Gen. 43:31), which is ואסתי. And the interpretation of אמסה (I melt) is (to be gathered) from (such passages) as: “they made the heart of the people melt (המסיו)” (Josh. 14:8); “and like a moth Thou makest his beauty to melt away (ותמס)” (Ps. 39:12). These (instances) are from verbs lamed he of the hifil conjugation. And there are many (cases) of double 'ayin verbs of this signification, as: “They have made my heart to melt (הֵמַסּוּ)” (Deut. 1:28); “and the heart of the people melted (וַיִּמָּס)” (Josh. 7:8).
Rashi
every night I sully my bed Heb. אשׂחה an expression of (Lam. 3:45): “scum (סחי) and refuse”; (Isa. 5:25), “and their corpses were like spittle (כסוחה).” I sully my bed with tears. Menachem (p. 172), however, associated it with (Isa. 25:11): “as the swimmer (השׂחה) spreads out [his hands] to swim (לשׂחות),” and with (Ezek. 47:5), “water to swim in (שׂחו).”
Rashi
Tzion spread her arms. As in, “and he will stretch out his hand in its midst,”56Yeshayahuu 25:11. like a person who moves his hands back and forth [showing] his pain with them.57Alternatively, ‘Tzion spread her arms in prayer, but to no avail.’ (Lechem Dimah) Another explanation: פֵּרְשָׂה צִיּוֹן is an expression of breaking, as in, “no one breaks פּוֹרֵשׂ bread for them,”58Eichah 4:4. [and as in,] “they will not break [bread] for them in their bereavement to comfort them for the dead.”59Yirmiyahu 16:7. So did Menachem classify it. And in the language of the Mishnah, “the broken piece of bread פְּרוּסָה is intact.”60Maseches Berachos 37a. It means [that Tzion was] like a person in pain who clasps his hands and breaks them [from agony]. I found an addendum. Adonoy has commanded concerning Yaakov,