Of course we want to “accurately represent God” as best we can. And teaching and preaching what is right and good can be done in the context of grace, mercy, and acceptance. Yes we need to teach repentance; but it is the goodness of God that leads us to repentance! It’s the love, acceptance, grace, and mercy of God that empowers us to live right. Of course we need to teach what God has revealed, but/and we need to do so in the Spirit that He gave it.
Yes we need to call for change, a change of heart, mind, and lifestyles! God desires to give us an abundant life, a life filled with His love, grace, mercy, righteousness, and truth! And it requires repentance to embrace such. He desires for us to be whole personally and relationally, for our towns, cities, countries to be filled with the knowledge of His Word and Truth because He loves us. We who have been reconciled are called to a ministry of reconciliation!
And I believe that the above is best accomplished in a spirit of humility, grace, and acceptance. Such a presence is like cool spring of water to a man dying in the desert. After displaying tremendous acceptance grace and forgiveness, Jesus encouraged the woman caught in adultery to “go and sin no more”. But the “go and sin no more” followed the grace and forgiveness.