How did God release the things kept secret from before creation?
By His grace, God saw fit to release the things kept secret, sharing them with us through the Apostle Paul. Jesus did not reveal the mysteries, and Peter did not have them, but Paul was not a step behind the chiefest apostles in authority.
Les teaches that the secret of God, the Father, and of Christ—in whom are hid all the treasures of wisdom and knowledge—had been kept secret. But now, by His grace, God has seen fit to release these things and share them with us through the Apostle Paul. Les explains that many people want to go by what Jesus said, which is fine up to a point, but Jesus did not reveal the mysteries. Others want to go by what Peter said, but Peter did not have the mysteries. Paul, however, declares in 2 Corinthians 11:5 that he was not a whit behind the very chiefest apostles, and in verses 22 and 23 he shows he is more a minister of Christ than those who were Hebrews, Israelites, and the seed of Abraham. So the release came through Paul's unique apostleship.
How that by revelation he made known unto me the mystery; (as I wrote afore in few words,
Even the mystery which hath been hid from ages and from generations, but now is made manifest to his saints:
Through whom did God share the secret kept hidden?
God shared the secret kept hidden through the Apostle Paul. The context states He is now seen fit by His grace to release these things kept secret, sharing them with us through the Apostle Paul. This secret concerns God, the Father, and Christ, in whom are hid all treasures of wisdom and knowledge.
How were the mysteries kept secret since before creation revealed to us?
God, by His grace, released the things that had been kept secret and shared them with us through the Apostle Paul. Jesus did not reveal the mysteries, and Peter did not have them. Paul was not a whit behind the chiefest apostles in authority, so these hidden truths came through his ministry.