88. Q. Of how many parts does true conversion, or the turning of man to God, consist?
A. Two: the mortification of the old man, and the quickening of the new.
89. Q. What is the mortification of the old man?
A. It is heartfelt sorrow that we have provoked God by our sins, and more and more to hate them and flee from them.
90. Q. What is the quickening of the new man?
A. It is heartfelt joy in God through Christ, and with love and delight to live according to the will of God in all good works.
91. Q. But what are good works?
A. Only those which are done from true faith, according to the law of God, and to his glory; and not such as are based on our own opinions or the precepts of men.
The Heidelberg Catechism, Lords Day 33 Q&A 88-91
It is a revealing thing that God because of His holy character should be provoked by our sins. It’s easy enough to make the connection that God is Almighty & all powerful (may God strike me with lightening if I have done something wrong …etc.) yet Christians can grieve God by their wrong doing. Luke 15: 11-32. God although Spirit has a heart & it is moved to sadness when we sin against Him but also joy when we come to the realisation that repentance is a good thing when acted upon...Ps 51:17.
Rembrandt: The prodigal son
Not what my hands have done can save my guilty soul;
Not what my toiling flesh has borne can make my spirit whole.
Not what I feel or do can give me peace with God;
Not all my prayers and sighs and tears can bear my awful load.
Your voice alone, O Lord, can speak to me of grace;
Your power alone, O Son of God, can all my sin erase.
No other work but Yours, no other blood will do;
No strength but that which is divine can bear me safely through.
Thy work alone, O Christ, can ease this weight of sin;
Thy blood alone, O Lamb of God, can give me peace within.
Thy love to me, O God, not mine, O Lord, to Thee,
Can rid me of this dark unrest, And set my spirit free.
I bless the Christ of God; I rest on love divine;
And with unfaltering lip and heart I call this Savior mine.
His cross dispels each doubt; I bury in His tomb
Each thought of unbelief and fear, each lingering shade of gloom.
I praise the God of grace; I trust His truth and might;
He calls me His, I call Him mine, My God, my joy and light.
’Tis He Who saveth me, and freely pardon gives;
I love because He loveth me, I live because He lives.