What is the meaning of "Libi l'Chokekei Yisrael"?
Rashi: I (Devorah) love those who decide the laws in Yisrael (Chachamim).
Radak: Chokekei Yisrael are the leaders of Yisrael and the judges who impose the laws on the nation.
What is the meaning of "ha'Misnadvim ba'Am Barchu Hashem"?
Rashi: They persuaded the nation to bless Hashem and repent.
Radak #1: The ones who volunteered amidst the nation to go to war, bless Hashem for humbling your enemies in front of you.
Radak #2: The [Chachamim] who volunteer to teach Torah and Mitzvos to the nation, bless Hashem for this salvation.
Malbim: The 10,000 who went with Barak, bless Hashem for saving Yisrael with a small number and no fighting.