The following is from Jonathan Edwards’ Christian Cautions; Or, The Necessity of Self-Examination.
Evermore to join self-reflection with reading and hearing the word of God. When you read or hear, reflect on yourselves as you go along, comparing yourselves and your own ways with what you read or hear. Reflect and consider what agreement or disagreement there is between the word and your ways. The Scriptures testify against all manner of sin, and contain directions for every duty; as the apostle saith, 2 Tim 3:16. “And is profitable for doctrine, for reproof, for correction, for instruction in righteousness.” Therefore when you there read the rules given us by Christ and his apostles, reflect and consider, each one of you with himself, Do I live according to this rule? Or do I live in any respect contrary to it?
When you read in the historical parts of Scripture an account of the sins of which others have been guilty, reflect on yourselves as you go along, and inquire whether you do not in some degree live in the same or like practices. When you there read accounts how God reproved the sins of others, and executed judgments upon them for their sins, examine whether you be not guilty of things of the same nature. When you read the examples of Christ, and of the saints recorded in Scripture, inquire whether you do not live in ways contrary to those examples. When you read there how God commended and rewarded any persons for their virtues and good deeds, inquire whether you perform those duties for which they were commended and rewarded, or whether you do not live in the contrary sins or vices. Let me further direct you, particularly to read the Scriptures to these ends, that you may compare and examine yourselves in the manner now mentioned.