We live in a world today that thinks people are basically good. That is a false foundation to stand on. 
Psalms 14:1 The fool says in his heart, “God does not exist.”

They are corrupt; they do vile deeds.

There is no one who does good.
Jeremiah 17:9 – “The heart is deceitful above all things, and desperately sick; who can understand it?”
Romans 3:23 – for all have sinned and fall short of the glory of God
2 Chronicles 6:36 – “there is no one who does not sin”
Isaiah 53:6 – All we like sheep have gone astray; we have turned—every one—to his own way
Man is not basically good. He is corrupt from the word go! In order to be effective for God in reaching the lost, we must understand the truth and man’s dire condition apart from Christ! Let’s get out there and give them….. Heaven!