A repenting person fears and sins not; a graceless person sins and fears not.

A tender heart is ever a trembling heart. The penitent has felt sin’s bitterness. This hornet has stung him and now, having hopes that God is reconciled, he is afraid to come near sin any more. The repenting soul is full of fear. He is afraid to lose God’s favour which is better than life. He is afraid he should, for want of diligence, come short of salvation. He is afraid lest, after his heart has been soft, the waters of repentance should freeze and he should harden in sin again. ‘Happy is the man that feareth alway’ (Prov. 28.14).

Thomas Watson. The Doctrine of Repentance.