Ephesians 1:13

Verse 13. In whom ye also trusted] Ye Gentiles, having heard from us the word, τονλογον, the doctrine, of the truth, which is the Gospel, or glad tidings, of your salvation, have believed, as we Jews have done, and received similar blessings to those with which God has favoured us.

In whom also, εν ω, through whom, Christ Jesus, after that ye had believed, viz. that he was the only Saviour, and that through his blood redemption might be obtained, ye were sealed with that holy Spirit of promise; that is, The Holy Spirit, which is promised to them who believe on Christ Jesus, was given to you, and thus you were ascertained to be the children of God, for God has no child who is not a partaker of the Holy Ghost, and he who has this Spirit has God's seal that he belongs to the heavenly family. It was customary among all nations, when a person purchased goods of any kind, to mark with his seal that which he had bought, in order that he might know it, and be able to claim it if mixed with the goods of others; to this custom the apostle may here allude but it was also customary to set a seal upon what was dedicated to God, or what was to be offered to him in sacrifice. See this proved in the note on "John 6:27". The Jews themselves speak of the seal of God, which they term emeth, truth, and which they consider as a representation of the unoriginated and endless perfections of God. As the apostle is here speaking of the doctrine of truth, which came by the Holy Spirit, and is sealed on the souls of believers by this Spirit, he may have in view the Jewish notion, which is at once both correct and elevated. This Spirit of truth, John 14:17, who leads into all truth, John 16:13, and teaches all things, John 14:26, makes the impression of his own eternal purity and truth in the souls of them who believe, and thus they bear the seal of God Almighty. And they who in the day of judgment are found to bear this seal-TRUTH; truth in the inward parts, having truly repented, truly believed, and having been in consequence truly justified, and truly sanctified; and having walked in truth and sincerity towards God and man; these are sealed to the day of redemption; for, having this seal, they are seen to have a right to eternal life.