'Glimpse' in the Bible

By faith [that pleased God] Enoch was caught up and taken to heaven so that he would not have a glimpse of death; and he was not found because God had taken him; for even before he was taken [to heaven], he received the testimony [still on record] that he had walked with God and pleased Him.

They were shown that they were serving not themselves but you, in regard to the things now announced to you through those who proclaimed the gospel to you by the Holy Spirit sent from heaven -- things angels long to catch a glimpse of.