Further recommended reading on this subject:
1. A discussion on the appearance of "salvation by grace" in the Old Testament Scriptures:
'Grace in the Old Testament' by Art Farstad:
2. A hymn jointly authored by Philip Doddridge and Augustus Toplady, 'Grace 'Tis A Charming Sound.'
1 Grace, ’tis a charming sound,
Harmonious to mine ear;
Heaven with the echo shall resound,
And all the earth shall hear.
2 Grace first contrived the way
To save rebellious man;
And all the steps that grace display
Which drew the wondrous plan.
3 Grace first inscribed my name
In God’s eternal book;
’Twas grace that gave me to the Lamb,
Who all my sorrows took.
4 Grace led my roving feet
To tread the heavenly road;
And new supplies each hour I meet,
While pressing on to God.
5 Grace taught my soul to pray
And made mine eyes o’erflow;
’Twas grace which kept me to this day,
And will not let me go.
6 Grace all the work shall crown,
Through everlasting days;
It lays in heaven the topmost stone,
And well deserves the praise.
7 O let Thy grace inspire
My soul with strength divine
My all my powers to Thee aspire,
And all my days be Thine.
[ NB. Doddridge penned verses 1,2,4&6; Toplady added the others ].