to an incorruptible and undefiled inheritance that doesn't fade away, reserved in heaven for you,
It is interesting that the Holy Spirit selects this word when speaking of our inheritance. Peter well understood the finiteness of earthly things as opposed to the heavenly things that are infinite. Later in this epistle he speaks of the brevity of man’s glory (like grass or a flower that "withers") in contrast to the eternity of "the word of the Lord" (1 Peter 1:24-25). But here in verse 5, he firmly establishes that God’s people have something infinite, an inheritance that will never pass away. The passing of all the ages of time will never change our inheritance or the beauty of the moment when we receive it. In the next phrase Peter tells us where our inheritance is.