I have written to you, fathers, because you know Him who has been from the beginning. I have written to you, young men, because you are strong, and the word of God abides in you, and you have overcome the evil one.
The statement to fathers is a repetition of the previous statement, emphasizing the idea. But even those mature believers were written to; none are too old to continue learning. John wrote to young men were strong - qualified for active and useful service in the cause of the Christ. They had showed that they could be relied on and depended on to advocate and live out the great principles of Christianity. As believers we must all put on the armor of God daily to defend our faith and perform our responsibilities with all the strength we have in Christ. We must also have wisdom to discern what around us is of God and what is of the evil one.