The "TESTIMONY TO THE WORLD"

That ye put off concerning the former conversation the old man,

which is corrupt according to the deceitful lusts;

And be renewed in the spirit of your mind;

And that ye put on the new man,

which after God is created in righteousness and true holiness.

Ephesians 4:22-24

"Transformation of character is to be the testimony to the world of the indwelling love of Christ. ...
When self is surrendered to God, our eyes will be opened to see the stumbling stones which our un-Christlikeness has placed in the way of others."
Testimonies For The Church vol.6 p.43 E.G.W.