13 In [a]Him, you also, after listening to the message of truth, the gospel of your salvation—having also believed, you were sealed in [c]Him with the Holy Spirit of promise, 14 who is [d]given as a pledge of our inheritance, with a view to the redemption of God’s own possession, to the praise of His glory.
STRONGS NT 4972: σφραγίζω
σφραγίζω (Revelation 7:3 Rec.st); 1 aorist ἐσφραγισα; 1 aorist middle participle σφραγισάμενος; passive, perfect participle ἐσφραγισμενος; 1 aorist ἐσφραγίσθην; (in 2 Corinthians 11:10 Rec.st gives the form σφραγίσεται de coniectura vel errore (Tdf.; see his note at the passage)); (σφραγίς, which see); the Sept. for חָתַם; to set a seal upon, mark with a seal, to seal;
a. for security: τί, Matthew 27:66; namely, τήν ἄβυσσον, to close it, lest Satan after being cast into it should come out; hence, the addition ἐπάνω αὐτοῦ, over him i. e. Satan, Revelation 20:3 (ἐν ᾧ —i. e. δώματι —κεραυνός ἐστιν
—i. e. δώματι —κεραυνός ἐστιν ἐσφραγισμενος, Aeschylus Eum. 828; middle σφραγίζομαι τήν θύραν, Bel and the Dragon, , Theod.).
b. Since things sealed up are concealed (as, the contents of a letter), (σφραγίζω means, tropically, to hide (Deuteronomy 32:34), keep in silence, keep secret: τί, Revelation 10:4; Revelation 22:10 (τάς ἁμαρτίας, Daniel 9:24, Theod.; τάς ἀνομίας, Job 14:17; τούς λόγους σιγή, Stobaeus, flor. 34, 9, p. 215; θαυματα πολλά σοφή σφρηγισσατο σιγή, Norm. paraphr. evang. Ioan. 21,140).c. in order to mark a person or thing; hence, to set a mark upon by the impress of a seal, to stamp: angels are said σφραγίζειν τινας ἐπί τῶν μετώπων, i. e. with the seal of God (see σφραγίς, c.) to stamp his servants on their foreheads as destined for eternal salvation, and by this means to confirm their hopes, Revelation 7:3, cf. Ewald at the passage; (B. D., under the words, Cuttings and Forehead); hence, οἱ εσφραγισμένοι, fourteen times in Rec. Revelation 7:4-8, four times by G L T Tr WH (δεινοισι σημαντροισιν εσφραγισμένοι, Euripides, Iph. Taur. 1372); metaphorically: τινα τῷ πνεύματι and ἐν τῷ πνεύματι, respecting God, who by the gift of the Holy Spirit indicates who are his, passive, Ephesians 1:13; Ephesians 4:30; absolutely, middle with τινα, 2 Corinthians 1:22.
1 Peter 1:9 New American Standard Bible (NASB)
A Living Hope, and a Sure Salvation
1 Peter, an apostle of Jesus Christ,
To those who reside as aliens, scattered throughout Pontus, Galatia, Cappadocia, Asia, and Bithynia, who are chosen 2 according to the foreknowledge of God the Father, by the sanctifying work of the Spirit, [a]to obey Jesus Christ and be sprinkled with His blood: May grace and peace be yours in the fullest measure.
3 Blessed be the God and Father of our Lord Jesus Christ, who according to His great mercy has caused us to be born again to a living hope through the resurrection of Jesus Christ from the dead, 4 to obtain an inheritance which is imperishable and undefiled and will not fade away, reserved in heaven for you, 5 who are protected by the power of God through faith for a salvation ready to be revealed in the last time. 6 In this you greatly rejoice, even though now for a little while, if necessary, you have been distressed by various [c]trials, 7 so that the [d]proof of your faith, being more precious than gold which [e]is perishable, even though tested by fire, may be found to result in praise and glory and honor at the revelation of Jesus Christ; 8 and though you have not seen Him, you love Him, and though you do not see Him now, but believe in Him, you greatly rejoice with joy inexpressible and [f]full of glory, 9 obtaining as the outcome of your faith the salvation of [g]your souls.
Ephesians 5:3-7 New American Standard Bible (NASB)
3 But immorality [a]or any impurity or greed must not even be named among you, as is proper among saints; 4 and there must be no filthiness and silly talk, or coarse jesting, which are not fitting, but rather giving of thanks. 5 For this you know with certainty, that no [c]immoral or impure person or covetous man, who is an idolater, has an inheritance in the kingdom of Christ and God.
6 Let no one deceive you with empty words, for because of these things the wrath of God comes upon the sons of disobedience. 7 Therefore do not be partakers with them;