1)
What is the connection of the two halves of the verse?
1.
Radak: I did Mishpat, and did not oppress anyone - also You, do not leave me to my oppressors!
2.
Malbim: I did Mishpat, and also You must do Mishpat against Resha'im, for Your way is to pay Midah k'Neged Midah.