We are imperfect and so are all others. We may be good neighbors, and others may be too. In an imperfect world filled with imperfect humans, sometimes the best we can do is speak kindly to others and with care. We all are created human and stand before God’s throne. Since He is all-understanding, we can leave the rest to Him.
God loved us all, even when we were deep in trespasses and ignorance (Ephesians 2:4-5 Ephesians 2:4-5  But God, who is rich in mercy, for his great love with which he loved us,
 Even when we were dead in sins, has quickened us together with Christ, (by grace you are saved;)
American King James Version×). Speaking kindly shows our understanding that others are also among those God loves and wants to be saved. It is God’s task to call and convert people. He is the Master Potter for all mankind, and we are to follow His footsteps, not get in the way. Speaking kindly can never hurt, and when we have no answers, we can more easily leave the rest to God.