Ephesians 1:11

Ephesians  1:11 In whom also we were designated as an inheritance, having been predestinated according to the purpose of the One who works all things according to the counsel of His will,

Ephesians 1:14 Who is the pledge of our inheritance, unto the redemption of the acquired possession, to the praise of His glory.

We need both the sealing and the pledging because in God’s work on us two kinds of inheritances are involved. Ephesians 1:11 indicates that we were made God’s inheritance, and verse 14, that God is our inheritance. Our inheritance is God Himself. In God’s economy we are an inheritance to God, and God is an inheritance to us. This is a mutual inheritance. For us to be God’s inheritance, we need the sealing. We are God’s possession, and as our owner, God has put a seal upon us. Because God is our inheritance, we also need the pledging of the Holy Spirit as a guarantee. We shall inherit all that God is, that is, His Person, and all that God has, that is, His work. For such an inheritance, the Holy Spirit is the pledge, the guarantee.

- "Life Study of Ephesians " P114