1 John 2:21
“I have not written unto you because ye know not the truth, but because ye know it, and that no lie is of the truth.”
Context:The First Epistle of John, written by the apostle John, addresses various topics including the assurance of salvation, love for one another, and the importance of truth. In this particular verse, John emphasizes the reason behind his writing to the recipients of the letter.
Acknowledging Knowledge of the Truth:John begins by affirming that he is not writing to his readers because they lack knowledge of the truth. The believers he is addressing are already familiar with the truth of the Gospel and the teachings of Jesus Christ. This acknowledgment suggests that the recipients are already aware of the fundamental principles of the Christian faith.
Purpose of Writing:Despite their existing knowledge, John explains that he has written to them not due to their ignorance but because they already possess the truth. This indicates that John aims to reinforce and deepen their understanding of the truth they already know. He seeks to emphasise key aspects of their faith, reminding them of its significance and relevance to their lives.
The Incompatibility of Lies and Truth:John concludes the verse by stating that “no lie is of the truth.” Here, he highlights the inherent opposition between falsehood and truth. The presence of falsehoods and lies is incongruent with the nature of truth itself. John aims to alert his audience to the importance of discerning between falsehood and truth, encouraging them to cling to the genuine teachings of Christ.
Overall, 1 John 2:21 serves as a reminder to the believers that they are already acquainted with the truth, and John’s writing is meant to reinforce their understanding. The verse also highlights the incompatibility between lies and truth, emphasising the need for discernment and adherence to the genuine teachings of Christ.

