Part of this comes from incorrect either-or thinking. However, Jesus seems to tell us that sanctification requires a both-and thinking.
In Christ’s prayer for His followers in John 17, He uses the word sanctified three times (see verses 17-19). Although He is using the same Greek word each time, He uses a different “flavor” of the word to make it really clear what He means.
First of all, the Greek word for sanctified means the process of being made into a saint. So I sometimes I like to say the word this way: SAINT-ified.
Check out Christ’s prayer. First He says, “I sanctify Myself,” and then He says, “that they too may be truly sanctified.” Same Greek word, but each time is slightly tweaked.
Jesus uses a “flavor” of Greek which means sanctification is something that He has done completely and totally on His own once and for all. In other words, Christians are completely and totally sanctified at the very moment they surrender their life to Him.
But when He talks about His followers, the “flavor” of Greek means sanctification is something that is an ongoing process. In other words, we are being SAINT-ified.
So which is it? Sanctified once, or sanctified through an ongoing process?
It’s not either-or. It’s both-and!
Think about a married couple. From the moment the pastor says, “I now pronounce you husband and wife” they are married. It is done; fully completed. There is nothing the bride or groom can do to become more married.
However, the groom can begin to look at the marriage through his bride’s eyes. Then he can serve her in a way that helps her feel more joy, more satisfaction, and more fulfillment within the marriage. Neither of them becomes more married, but they can get more enjoyment within the marriage.
The same thing for Christians. At the moment we ask Jesus to be our Lord and Savior we are saved from the penalty of our sins. We can’t be more saved. But through the process of SANIT-ificiation we can experience more joy, more satisfaction, and more fulfillment within our relationship with Jesus.
My paraphrase of 1 Peter 1:15-16—But just as He who called you has paid for your once-for-all saint-ification, so keep on being saint-ified in all you do; for it is written: “Be holy, because I am holy.”
What about you? Are you satisfied with just being saved, or are you striving for a joy-filled, more fulfilling, increasingly satisfied relationship with Jesus Christ? It can truly be a wonderful both-and relationship!