The Apostle Peter was a man on threes. He denied Jesus three times, and Jesus restored him by asking him three times, “Do you love me?”
And following Jesus’ example, in 2 Peter 12-15, the Apostle gives us a triple reminder: "So I will always REMIND you of these things, even though you know them and are firmly established in the truth you now have. I think it is right to REFRESH YOUR MEMORY as long as I live in the tent of this body...And I will make every effort to see that after my departure you will always be able to REMEMBER these things.
In our culture, repetition is not a valued thing—we hear it once and that’s enough. But biblically, repetition is highly valued and important—both because there are always new things to learn from Scripture, and because we all need ongoing reminders of Truth. For example, I have to remind myself to not complain (a very natural thing for me) but to offer the sacrifice of thanksgiving (a supernatural thing to do.
In following Peter’s example, every morning my wife and I pray on the armor of Ephesians 6:10-18, and it is always a good reminder of the battle we are about to enter. It’s like “tuning up” our thinking, preparing us for what may come.
So don’t shy away from repetition of truth, in fact aggressively employ it so that Truth can sink deeply into your soul and then come out in biblical living.