John Bunyan's "Grace Abounding":
"I never cared to meddle with things that were controverted and in dispute among the saints, especially things of the lowest nature. Yet it pleased me much to contend with great earnestness for the word of faith, and remission of sins by the death and sufferings of Jesus. But, I say as to other things, I would let them alone, because I saw they engendered strife, and because they neither in doing nor in leaving undone did commend us to God to be His."
"Many poor men and women are illiterate and untrained, and these would find deep thought to be very heavy work. Others are so light and trifling by nature, that they could no more follow out a long process of argument and reasoning, than they could fly. They could never attain to the knowledge of any profound mystery if they expended their whole life in the effort. You need not, therefore, despair: that which is necessary to salvation is not continuous thought, but a simple reliance upon Jesus. Hold you on to this one fact—"In due time Christ died for the ungodly. " This truth will not require from you any deep research or profound reasoning, or convincing argument. There it stands: "In due time Christ died for the ungodly." Fix your mind on that, and rest there."