What keeps a seal sticking to something ? Why does the Seal of the Spirit stick to Saints ? Seals adhere. They stick . They stay . Unless removed or broken , or if something causes the stickiness to be degraded. What is it that causes the Seal of the Holy Spirit to adhere to the Christian ? The Spirit being present within IS the Seal . Does the Seal stick to my corrupt , mortal human flesh ? No . The Spirit has no affinity for corruption . Does the Seal of the Spirit stick to my sin or iniquity ? Silly . Again , NO . What does the bible say about the seal of the Spirit ?