Without the gospel everything is useless and vain; without the gospel we are not Christians; without the gospel all riches is poverty, all wisdom folly before God; strength is weakness, and all the justice of man is under the condemnation of God. But by the knowledge of the gospel we are made children of God, brothers of Jesus Christ, fellow townsmen with the saints, citizens of the Kingdom of Heaven, heirs of God with Jesus Christ, by whom the poor are made rich, the weak strong, the fools wise, the sinner justified, the desolate comforted, the doubting sure, and slaves free. It is the power of God for the salvation of all those who believe.
This is what we should in short seek in the whole of Scripture: truly to know Jesus Christ, and the infinite riches that are comprised in him and are offered to us by him from God the Father.
From John Calvinâ€™s preface to Pierre Robert Olivtanâ€™s 1534 translation of the New Testament.