Are these the same Bnei Nechar mentioned in verse 45?
Radak: No. These are the ones who do not obey me.
What is the meaning of "Yibolu"?
Rashi: They will wither away. This is like "v'He'elah Navel" (Yirmeyah 8:13).
Rashi (Tehilim 18:46): They will weary. This is like "Navol Tibol" (Shemos 18:18); The Targum is Mil'ah Til'ah.
Rashi (Tehilim 18:46, citing Menachem): They will become withered. This is like "Acharei Velosi" (Bereishis 18:12). He similarly explained "Navol Tibol" (Shemos 18:18).
Malbim (Tehilim 18:46): [Nochrim who were far away] will weary [from the tedious journey to come to me to hear me].
What is the meaning of "v'Yachgeru"?
Rashi: This is an expression of Pise'ach (lame). Rashi (Tehilim 18:46, citing Dunash) - they will become lame due to the fetters on their legs.
Rashi (Tehilim 18:46, citing Menachem): They will become soft.
Radak: This is like "v'Yachregu" (Tehilim 18:46; the letters are reversed), i.e. motion due to fear. The Targum of "ume'Chadarim Eimah" (Devarim 32:25) is Chargas Mosa. Also Yonason translates here 'vi'Yzu'un.' Rashi (Tehilim 18:46) - they will fear.
Malbim (Tehilim 18:46): [Nochrim who were far away] will become lame [from the tedious journey to come to me].
What is "mi'Misgerosam"?
Rashi: Due to the harshness of the afflictions in their Masger (incarceration), that I afflict them.
Radak: They are closed in due to their fear. (Even there, they will fear!)
Radak citing Targum Yonasan: From their castles.
Malbim (Tehilim 18:46): [Nochrim who were] closed off in far away mountains [will toil to leave them, to come to hear me].
