Martin Luther — Selections from the Table Talk of Martin Luther

It is a great matter when in extreme need, to take hold on prayer. I know, whenever I have earnestly prayed, I have been amply heard, and have obtained more than I prayed for; God, indeed, sometimes delayed, but at last…

Upright Christians pray without ceasing; though they pray not always with their mouths, yet their hearts pray continually, sleeping and waking; for the sigh of a true Christian is a prayer.

Prayer preserves the church, and hitherto has done the best for the church; therefore, we must continually pray.

None can believe how powerful prayer is, and what it is able to effect, but those who have learned it by experience.

A theology of glory calls evil good and good evil. A theology of the cross calls the thing what it actually is.

The law says, "do this," and it is never done. Grace says, "believe in this," and everything is already done.