The worship of the angels in the heavenly throne room is astounding (Revelation 4). He who sits on the throne is there. From His throne all that has been and is and will be is set. The living creatures, the twenty-four elders, and the myriad of the heavenly host praise God.
The angels are in God’s presence, they know and sing about and do His will. But, there was a time when they were curious about something that wasn’t obvious. They knew God was worthy to be praised for His glory, His honor, His power, but they didn’t get His grace, His suffering, and His salvation.
Concerning this salvation, the prophets prophesied about the grace that was to be yours searched and inquired carefully, inquiring what person or time the Spirit of Christ in them was indicating when he predicted the sufferings of Christ and the subsequent glories. It was revealed to them that they were serving not themselves but you, in the things that have now been announced to you by the Holy Spirit sent form heaven, things into which angels long to look. (1 Peter 1:10-12, ESV)
The heavenly beings will also praise God for His Redeemer, the Lamb slain before the foundation of the world (Revelation 5). But grace is something they know from watching, not something they know from tasting. Jesus did not take on “angel flesh,” He took on a human body and blood so that we could be saved. He purchased our salvation. He will bring us to the throne at the appointed not only to be seen by the angels, but to judge them (1 Corinthians 6:3).