Why did he say that Hashem is "Shofet Tzedek"?
Radak: He judged between me and them.
Malbim: A crooked verdict cannot come from You due to (a) tilting the law, for You are a righteous judge, and not due to not knowing the truth of the matter, for this was only in their thoughts, and "You test kidneys and the heart."
Why did he say that Hashem tests kidneys and the heart?
Radak: You perceived their hearts and kidneys, and told me their intent, so I would be saved from them.
Refer to 17:10:1:2.
Why did he say "Er'eh Nikmascha Mehem"?
Rashi: He cursed the people of Anasos.
Radak: I will not die until I see that you take vengeance from them.
Malbim: I do not request my vengeance, only Your vengeance.
What is the meaning of "Ki Elecha Gilisi Es Rivi"?
Radak: I have no brother or relative to reveal my quarrel to them, for they wanted to kill me! I revealed it to You; You will take my judgment from them. Dibrah Torah k'Leshon Bnei Adam; 'revealing' does not apply to Hashem, who knows everything! Yonason translates Gilisi as 'I said.'
Malbim: My quarrel was for you. They wanted to kill me in my quarrel because I prophesized in Your name. If so, via this You will take Your vengeance from this.
