“Which is the earnest of our inheritance until the redemption of the purchased possession, unto the praise of his glory.”
King James Version (KJV)
1:14 Who, thus sealing us, is an earnest - Both a pledge and a foretaste of our inheritance. Till the redemption of the purchased possession - Till the church, which he has purchased with his own blood, shall be fully delivered from all sin and sorrow, and advanced to everlasting glory. To the praise of his glory - Of his glorious wisdom, power, and mercy.
Eph 1:14 Which is the earnest of our inheritance. The "earnest" money was a small part of the purchase money given in hand to bind the bargain. Paul says that the Holy Spirit given to God's children is such earnest of the inheritance that he will bestow, a small part given now as a proof to his adopted children. Until the redemption. Rather, "Unto". This "earnest" given is looking unto the final and complete "redemption" from the grave of the purchased possession, the children of God bought with Christ's blood.