Pray without ceasing.
And we must take care, dear brethren, again, if we would perform this duty, that we fight against anything like despair of being heard. If we have not been heard after six times we must, as Elijah, go again seven times; if our Peter is in prison, and the church has prayed God to liberate him, and he still is in fetters bound in the inner prison, let us pray on, for one of these days Peter will knock at the gate. Be importunate, heaven's gate does not open to every runaway knock. Knock, and knock, and knock again; and add to thy knocking and to thy asking seeking, and be not satisfied till thou gettest a real answer.
