When I Read Saint Faustina’s Book On Divine Mercy,jesus Showed Her,her Place In Heaven And It Was Veiled Until She Gets There, And She Said She Was Goinr To Be Among The Seraphim.
Well… none of us knows the location God will place us, in Heaven; I’m not questioning that. But St. Faustina herself, didn’t become a Seraph, after death. Because humans don’t “become” angels, in Heaven. A human, canonized by the Catholic Church… is known as a “saint”.
Angels are a seperate and higher type of creature than Man. They were all created, before time began. At some point, they were given a choice… between good and evil. The good angels… stayed with God… and serve Him. The bad angels, including the devil… fell from friendship with God and became demons. They will be in hell, forever.
This is what the Catechism of the Catholic Church (CCC) says, regarding angels:
(329) … “Angel” is the name of their office, not of their nature. If you seek the name of their nature, it is ‘spirit’; if you seek the name of their office, it is ‘angel’: from what they are, ‘spirit’, from what they do ‘angel.’" With their whole beings the angels are servants and messengers of God. Because they “always behold the Face of My Father Who is in Heaven” they are the “mighty ones who do His word, hearkening to the Voice of His word.”
(330) As purely spiritual creatures angels have intelligence and will: they are personal and immortal creatures, as the splendor of their glory bears witness.
And regarding Man:
(356) Of all visible creatures only man is “able to know and love his Creator”. He is “the only creature on earth that God has willed for its own sake,” and he alone is called to share, by knowledge and love, in God’s own life. It was for this end that he was created, and this is the fundemental reason for his dignity:
What made You establish man in so great a dignity? Certainly the incalculable love by which You have looked on Your creature in Yourself! You are taken with love for her; for by love indeed You created her, by love You have given her a being capable of tasting Your eternal Good.
It’s a lot to try to absorb. But thankfully, the Church does that FOR us. And lays it all out, in the Catechism of the Catholic Church.
God bless.