Angels: Know and Delight in the Gospel of Christ
Source: TTT
Ephesians 3:9, 10
and to illuminate for everyone the stewardship of this mystery, which for ages past was kept hidden in God, who created all things. / His purpose was that now, through the church, the manifold wisdom of God should be made known to the rulers and authorities in the heavenly realms,
1 Timothy 3:16
By common confession, the mystery of godliness is great: He appeared in the flesh, was vindicated by the Spirit, was seen by angels, was proclaimed among the nations, was believed in throughout the world, was taken up in glory.
1 Peter 1:12
It was revealed to them that they were not serving themselves, but you, when they foretold the things now announced by those who preached the gospel to you by the Holy Spirit sent from heaven. Even angels long to look into these things.