Pilgrim's Progress
Chapter 2
Then did Christian address himself to go back; and Evangelist, after he had kissed him, gave him one smile, and bid him God-speed. So he went on with haste, neither spake he to any man by the way; nor, if any asked him, would he vouchsafe them an answer. He went like one that was all the while treading on forbidden ground, and could by no means think himself safe, till again he was got into the way which he left, to follow Mr. Worldly Wiseman's counsel. So, in process of time, Christian got up to the gate. Now, over the gate there was written, Knock, and it shall be opened unto you.
He that will enter in must first without
Stand knocking at the Gate, nor need he doubt
That is A KNOCKER, but to enter in;
For God can love him, and forgive his sin.
He knocked, therefore, more than once or twice, saying --
May I now enter here? Will he within
Open to sorry me, though I have been
An undeserving rebel? Then shall I
Not fail to sing his lasting praise on high.