Symbols and Similitudes of the Holy Spirit: Earnest
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Ephesians 1:13, 14
And in Him, having heard and believed the word of truth—the gospel of your salvation—you were sealed with the promised Holy Spirit, / who is the pledge of our inheritance until the redemption of those who are God’s possession, to the praise of His glory.
Ephesians 4:30
And do not grieve the Holy Spirit of God, in whom you were sealed for the day of redemption.
2 Corinthians 1:22
placed His seal on us, and put His Spirit in our hearts as a pledge of what is to come.