“You also, as living stones, are being built up as a spiritual house for a holy priesthood, to offer up spiritual sacrifices acceptable to God through Jesus Christ…Behold I lay in Zion a choice stone, a precious corner stone, and He who believes in Him shall not be disappointed!” I Peter 2:5, 6
We are called with a holy calling, according to God’s sovereign purpose, grace, and mercy! Our purpose as a spiritual building of the Lord–a monument of grace–is to offer sacrifices of praise and thanksgiving to Him Who abolished death and gave us life and light in our darkness!
The following hymn really captures this thought and expresses my own heart’s longing and prayer. It was written by John Kent, and unfortunately, is not recorded in many modern hymnals, but may be found in Spurgeon’s, “Our Own Hymnbook.” 
Monument of Grace
“Indulgent God! how kind are all Thy ways to me,
Whose dark benighted mind was enmity with Thee;
Yet now, subdued by sovereign grace, my spirit longs for Thine embrace.
How precious are Thy thoughts, that o’er my bosom roll;
They swell beyond my faults, and captivate my soul;
How great their sum, how high they rise, can ne’er be known beneath the skies.
Preserved in Jesus, when my feet made haste to hell;
And there should I have gone, but Thou dost all things well;
Thy love was great, Thy mercy free, which from the pit delivered me.
Before Thy hands had made the sun to rule the day,
Or earth’s foundation laid, or fashioned Adam’s clay,
What thoughts of peace and mercy flowed in Thy dear bosom, O my God!
A monument of grace, a sinner saved by blood:
The streams of love I trace up to the Fountain–God!
And in His sacred bosom see eternal thoughts of love to me.”
John Kent, 1766-1843
 C.H. Spurgeon (compilation, 1866), Our Own Hymn-Book, Pilgrim Publications, Texas. 2nd Ed, 2002.