yo predicaba
I used to preach / I was preaching
tú predicabas
you used to preach / you were preaching
él predicaba
he used to preach / he was preaching
nosotros predicábamos
we used to preach / we were preaching
vosotros predicabais
you used to preach / you were preaching
ellos predicaban
they used to preach / they were preaching