In this work we use the Nambu-Jona-Lasinio (NJL) model as an effective quar
k theory based on QCD to describe the structure of baryons. Based on the so
lutions of the relativistic 3-quark Faddeev equation in the ladder approxim
ation, we discuss the masses of the nucleon and the delta, the static prope
rties of the nucleon, and the quark light cone momentum distributions in th
e nucleon.