Having addressed all believers in general, John now addresses those at different stages in the Christian life and assigns specific blessings to each, both male and female. Those who have advanced furthest, the fathers in the faith, have the clearest sense that the one who has been made manifest as the Word of life is from everlasting, and they have fellowship with him who was there before the world began.
No Christian should fail to make progress: children must become young men and young women, and young men and women must become fathers and mothers in the faith, and none of us should stand still. What a father is, a child aspires to be, and the knowledge that is present in a father is also present in rudimentary form in the child.
Fathers in the faith have the benefit of experience and should take correspondingly more responsibility in the house of God. Older believers are supposed to become fathers to the young in the faith, caring and supporting them as they face many of the same trials. Where there is a generation gap in a church, it may be that the fathers are not taking their responsibilities seriously.
Young men and women should have a vigour and strength that enables them to do much for the Lord. They are past the stage where they need special care and nurture, and should be ready to use their God-given spiritual strength to serve God in prayer, good works, and witness to the truth.