John 17:19
“And for them [His disciples], I sanctify Myself, so that they themselves also may be sanctified in truth.
Here the Greek word translated "sanctify" refers to Christ consecrating His life, as our substitutionary sacrifice, so that we, those born anew, may be indwelt and guided into effective witnessing for truth, the gospel of Christ.
Jesus is not asking only for His disciples, but for those who will belief in Jesus through their testimony, verse 20.
“And for them [His disciples], I sanctify Myself, so that they themselves also may be sanctified in truth.
Here the Greek word translated "sanctify" refers to Christ consecrating His life, as our substitutionary sacrifice, so that we, those born anew, may be indwelt and guided into effective witnessing for truth, the gospel of Christ.
Jesus is not asking only for His disciples, but for those who will belief in Jesus through their testimony, verse 20.