Heart-suffering because of sin is the best proof that the Holy Spirit dwells in your heart.
Johann ArndtGive me ... a compassionate heart, quickly moved to grieve for the woes of others and to active pity for them, even as our Lord Jesus Christ beheld our poverty and hasted to help us. Give me grace ever to alleviate the crosses and difficulties of those around me, and never to add to them; teach me to be a consoler in sorrow, to take thought for the stranger, the widow, and the orphan; let my charity show itself not in words only but in deed and truth.
Johann ArndtConsider then, O man! whether there can be anything more wretched and poor, more naked and miserable, than man when he dies, if he be not clothed with Christ's righteousness, and enriched in his God.
Johann ArndtFor even these are no less bestowed on him of pure grace, than are righteousness and salvation themselves.
Johann Arndt