Love the rhyme structure, skiiping three lines between rhymes, awesome. The first two stanzas are excellent. The last one fell short imo… too obvious and opinionated I guess if I had to be specific. However, the first line in the last stanza should be excluded from my criticisms. I loved that part. idk.

The ABCD scheme is very fine indeed.
With a bit of rhythmic tuning I feel this could be extremely compelling, more than it already is.
With the cross and angel references already in place, I feel that specifically mentioning the Bible is tad (?) redundant. The word “book”, “tome”, or otherwise would suffice, and be less at odds with the sensitivity of the poem.

Also, there is a song by Coldplay that bears the same name and themes of your poem here. I highly recommend listening to it, and indeed the entire accompanying album.

I actually based it on this song. I thought the parallels were obvious, aha