Gospel in Life
with Tim Keller
Holiness: Overview
Monday, February 16, 2026
How can you be in such a condition that the troubles and sufferings of life don’t crush you but actually hone and refine you? Peter tells us that to be that kind of person, you have to be holy.
In these verses, Peter says to “gird up the loins of your mind.” It’s a picturesque statement of preparing for action, of tucking your robes into your belt. And Peter applies this to the mind, meaning you have to focus totally and get ready for action. Seeking God is not a hobby.
But it’s not just about seeking God. What you need is in verse 16: “Be ye holy; for I am holy.” This teaches us three things: 1) it teaches us that God is holy, 2) it teaches us that we must be holy, and 3) it teaches us that we can be holy because God is holy.
This sermon was preached by Dr. Timothy Keller at Redeemer Presbyterian Church on October 17, 1993. Series: Splendor in the Furnace: 1 Peter, Part 1. Scripture: 1 Peter 1:13-21.
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