<p>1:6 <em>Even as the testimony of Christ was confirmed in you- </em>The preaching of Christ was confirmed <em>in</em> the believers by the gift of the Spirit within their hearts. And this was itself the testimony of Christ to the validity of their conversion to Him. The external miraculous gifts of the Spirit were given to confirm the preaching of the Gospel (s.w. Mk. 16:20), but their withdrawal doesn't mean that the Lord Jesus doesn't still confirm the preaching of His word by the Spirit in an internal sense. This is the significance of the word <em>in </em>you. Paul says that this confirmation will work in them &quot;until the end&quot;, i.e. the final glorification at the Lord's return (:8 s.w.). It was not temporary nor was it going to be withdrawn. A process is ongoing which is intended to bring us to final salvation at the Lord's return. This confirmation or 'establishment' is achieved by our being 'anointed'- a clear reference to the gift of the Spirit (2 Cor. 1:21 s.w.). The same word is used in Rom. 4:16, speaking of how the promise of salvation to Abraham is confirmed or AV &quot;made sure to all the seed&quot;.</p>