<p>1:13 <i>In whom you also believed, having heard the word of the truth, the gospel of your salvation, and were sealed with the Holy Spirit of promise</i>- This sealing is the confirmation of our trust / solid hope that we really will be saved in Christ; see on :12. Our trust / belief / hope in &quot;the word of the truth&quot; doesn't refer to our having figured out a true set of theological propositions called &quot;the truth&quot;. Our solid faith and hope in Christ is related to &quot;the truth&quot;- we consider the word of the Gospel as &quot;the truth&quot;, we take it as truth. And the greatest personal truth for each believer is that we have heard &quot;the gospel of salvation&quot;, we really shall be eternally saved. And we are &quot;sealed&quot;, confirmed in our faith, by the gift of the Spirit (see on :12). The &quot;promise&quot; of the Spirit surely refers to the promise of the Comforter within us in Jn. 14-16, and this in turn is alluded to in Gal. 3:14, which speaks of our receipt of &quot;the promise of the Spirit through faith&quot;. Thus the gift of the Spirit at baptism is a promise to all who shall believe at all times, and not just in the first century (Acts 2:39).</p><p>At our baptism we became &quot;in Christ&quot;. Through that act we obeyed all the Lord's invitations to believe &quot;in Him&quot;, or as the Greek means, to believe <i>into</i> Him. We believed <i>into</i> Him after we heard the Gospel, by baptism. We are now connected with the death and resurrection of the Lord Jesus Christ; we are treated by God as if we are His Son, and therefore the Spirit of His Son is given to us, to make us in reality as we are by status.</p>