German to English Art/Literary History Religious context

This is from Luther's "Tischreden" and appears as the last of the four lines that are often seen as one 4-line entity.
I'm doing this as a favor for someone working on a larger piece. Thus, must admit, I'm not much of a Luther expert. Would appreciate some insights from all the bright and learned brains out there.

Sau du musst dich lassen reiten
Und wol (wohl) Sporen zu beiden Seiten.
Du willst hon. ein Concilium
Ja dafür hab dir mein merdrum.