The Spirit of God in this epistle distinguishes between the way in which God spoke, or dealt, in time past and now. Messages were sent through others. They had communications from God, for he spake to them through prophets: but now we have the manifestation of Himself.
The son of God has now come. We are not only brought to God now, but to God revealing Himself, God manifest in the flesh. Christ came declaring the father. What a blessed place we have in Christ, having Him as the revelation of God to us! The mind of God is brought before us in Christ.