"Unto whom it was revealed, that not unto themselves, but unto us they did minister the things, which are now reported unto you by them that have preached the gospel unto you with the Holy Ghost sent down from heaven; which things the angels desire to look into" (I Peter 1:12).
This is an amazing revelation. Many Christians speak of what they call the "simple gospel," and yet its scope is so great that angels, whose wisdom and power are far greater than those of human beings, are continually learning about its riches as they watch from heaven. Angels, like humans, are created beings. They are not omniscient, and they evidently are learning more and more about Him as they observe the outworkings of His great plan of creation and redemption through the lives of redeemed men and women on Earth. In fact, "the principalities and powers in heavenly places" are somehow being instructed "by the church the manifold wisdom of God, According to the eternal purpose which He purposed in Christ Jesus our Lord" (Ephesians 3:10-11).
Satan and the angels who are following him in his long war against God are also learning. They learned long ago that they could not destroy Job's faith in God, nor Peter's testimony for Christ, though they surely tried! And they will soon start learning, in the "everlasting fire, prepared for the devil and his angels" (Matthew 25:41), that God alone is Creator and eternal King.
Now if angels are still learning about God and His ways, though they have already been in God's presence for thousands of years, we can also learn from them, that our future translation to heaven will not immediately enable us to understand all things. We, like they, shall continue learning forever, "the depth of the riches both of the wisdom and knowledge of God!" (Romans 11:33). HMM