“The steadfast love of the Lord never ceases; his mercies never come to an end...”
- Lamentations 3:22
God's mercy cannot end because our needs never end.
God's mercy knows no end because our sin knows no end.
As long as we are on this side of heaven, we are plagued with sin; sin “dwells in our members” (Ro. 7:23). On the cross, King Jesus pays the penalty for sin; for the rest of our lives, we fight the power of sin (Ro. 7). The Christian life is a war; we are continually killing sin because sin is constantly trying to kill us (Col. 3:5).
How do we do this? How do we kill sin, occasional sin, and besetting sin? We start by hating sin— Paul tells us to hate sin (Ro. 12:9). We must feel the magnitude of our sin; our sin must grip us, its stench must repeal us. If we pass over our sin lightly, abusing God's grace by trifling with sin, we will never learn to hate sin.