2 Corinthians 1:21-22, The Earnest of the Spirit In Our Hearts
He further said insightfully, “People do not know that we are Christians by some badge we wear, but only by the evidences of a Spirit-filled life. God has also given them the Spirit in their hearts as a guarantee or downpayment in pledge that the entire inheritance will follow. When God saves a man, He gives him the indwelling Holy Spirit. Just as surely as a man receives the Spirit, so surely will he enter into the full inheritance of God. The same kind of blessings which the Holy Spirit makes real in our lives today will be ours in full measure in a day yet future.”