How do we know that faith and sealing are connected?

In the context of Ephesians 1:13, we see that believing and being sealed occur together. The construction of the Greek text suggests that believers are sealed at the same moment they come to faith. This reflects the work of the Holy Spirit, who imparts faith and seals the believer as a mark of God's ownership and assurance. Thus, every genuine believer experiences this sealing as an essential part of their conversion and ongoing relationship with Christ, affirming that salvation is the work of the Triune God.