Word Code - Amazing GrAce

The above Word Code has been designed such that fourteen words out of twenty-eight are words from the lyrics of the hymn “Amazing Grace - My Chains are Gone”. Watch the Chris Tomlin’s version of the hymn: https://youtu.be/Y-4NFvI5U9w

The Lyrics of the song (from which the fourteen words come from) are shown below:
Verse # 1: Amazing grace how sweet the sound, That saved a wretch like me … …
I once was lost, but now I’m found; Was blind, but now I see.

‘Twas grace that taught my heart to fear. And grace my fears relieved … …
How precious did that grace appear; The hour I first believed.
Chorus: My chains are gone, I’ve been set free; My God, my Saviour has ransomed me … …
And like a flood His mercy reigns Unending love Amazing grace.
Verse # 2: The Lord has promised good to me, His word my hope secures … …
He will my shield and portion be; As long as life endures.

[Chorus] x Twice.
Verse # 3: The earth shall soon dissolve like snow, The sun forbears to shine … …
But God who called me here below; Will be forever mine, will be forever mine.
You are forever mine.
Now watch the The IL VIVO Version: https://youtu.be/GYMLMj-SibU
And also The Brigham Young University’s version: https://youtu.be/X6Mtpk4jeVA

How to go about doing this Word Code? Any ideas?
My thoughts on the solution: (1) We are sure that two of the words must be the words of the title “Amazing” and “Grace”. So we hunt down the spots where there are seven letters in a word. The two spots uncovered are (a) starts at cell b4 and going down; and (b) starts at cell b5 going across.
(2) If it is the one going down, starting at cell b4, I need to find a two-lettered word ending in ‘ a ‘. There is no such two-lettered word. Besides, the word AMAZING has A as the first and the third letter and this does not match the requirement at b4 down. So, we can confirm that the word AMAZING is the one starting at cell b5 and going across.
(3) Therefore number 4 = A; number 18 = M; number 19 = Z; number 13 = I; number 15 = N; and number 20 = G. Substituting all these numbers in the grid with the the letters, we can now easily proceed with getting a solution to the challenge.

奇異恩典 不再綑綁 Amazing Grace, My Chains Are Gone. https://youtu.be/qgn3GTn89tg
歌詞:
奇異恩典 何等甘甜
我罪已得赦免
前我失喪 今被尋回
瞎眼今得看見
如此恩典 使我敬畏
使我心得安慰
初信之時 即蒙恩惠
真是何等寶貴
我主應許 美好無比
盼望永不失去
有主做為 盾牌福分
我心不再畏懼
不再有捆綁 我已得釋放
我救主耶穌 已付代價
豐富恩典 今充滿我
永恆的愛 奇異恩典
天地都會 漸漸廢去
但我主永長存
我的生命 有主看顧
我永遠屬於祢
我永遠屬於祢
我永遠屬於祢



THE SOLUTION IS SHOWN BELOW:
