Am not sure that I agree with this. Does it matter if men observe or God? Men cannot see the heart of another unless knowledge/ wisdom, or discernment is working, and men can misunderstand actions. Not so with God.
We do have the ministry of reconciliation though, so will look further at the Word in scriptures.
And I don't think that Abraham was called the friend of Godby men, but called this by God. I say this because Holy Spirit said to me just recently as I was thinking about talking with the Lord throughout my whole day. That this is what being a friend of God means,
Remember that the scriptures were penned by men hearing through Holy Spirit.