A seal can be:
depending on the context.
Or a seal can be:
Or a seal can be:
Signet Cylinder of Sennacherib(Original is in British Museum)
The ancient seal was a
stamp or engraving set in stone, metal or some hard substance like crystal. It was usually a symbol or a figure that was used to make an impression on clay or wax, or some other soft substance.
It was usually attached to an object like a possession or a document, in order to give it authenticity, ownership or authority. It was used often in the ancient world, especially in Egypt, Babylonia and Assyria and surrounding nations including Israel.
"Set me as a seal upon thine heart, as a seal upon thine arm." - Song of Solomon 8:6
In the case of this verse, however, "
who also sealed us and gave the down payment of the Spirit in our hearts", Paul's point is that
The Spirit (which I cannot upload a picture of) is the seal and is none other than God (The Holy Spirit) and is quite literally placed
in the hearts of believers specifically for the stated purpose of "
confidence" and "
comfort" knowing that it's a "
down payment" of things yet promised by God (while still being a confidence in the present tense as well).
You never answered my question. How can a "seal" that can be broken provide any comfort and/or confidence? How can God's promises (any of them) be broken? If you think context is important, then be consistent and exegete the verse within the context of confidence and comfort and God's promises. It might actually change your mind, though so be careful.