God needs loving, accepting, and compassionate people—not accepting of sin, but accepting God’s forgiveness of sin for all who repent. 

No child of God sins to that degree as to make himself incapable of forgiveness

I shouldn’t complain about God’s mercy to others while thanking Him for His mercy to me. I shouldn’t commit the sin of pride by justifying my rebellion or my running from God compared to other people’s sin. Who am I to be angry at what the angels in Heaven rejoice in?

We have a strange illusion that mere time cancels sin. I have heard others, and I have heard myself, recounting cruelties and falsehoods committed in boyhood as if they were no concern of the present speaker's, and even with laughter. But mere time does nothing either to the fact or to the guilt of a sin. The guilt is washed out not by time but by repentance and the blood of Christ: if we have repented these early sins we should remember the price of our forgiveness and be humble.

Being content to walk with God brings peace in the midst of uncertainty. It brings wisdom in the unknown. It brings contentment in any situation and grace in every circumstance. It brings mercy and forgiveness in sin and blessed assurance in condemnation. It brings freedom from captivity. Walking with God brings light and air into the pit, as God reaches down to rescue us when we fall.

Repentance may be old-fashioned, but it is not outdated so long as there is sin.