A purity of the heart without guile, presented in a non-judgmental, non-bias posture, aiming to restore, rather than ‘retribute.’
A purity of gentleness is when your have no side motives. You are not pushing a person for information, giving unsolicited advice, trying to save the day, preach or any of the above. Not listening to correct, but experience God with them to connect with what God is doing in them.
Purity of gentleness is a way to communicate hard things to an individual, but in a way that they trust you, because of the way you have presented yourself to them. You have approached them humbly, in which you are self aware of your own hard spots, yet in a way in which you show excitement in the possibility of what God will do to restore them. They experience that you are for them and another soul on a journey to God.