Colossians 3:17(NLT): 17) And whatever you do or say, let it be as a representative of the Lord Jesus...
2 Timothy 2:24-25(NLT):
24) The Lord's servants must not quarrel but must be kind to everyone. They must be able to teach effectively and be patient with difficult people. 25) They should gently teach those who oppose the truth. Perhaps God will change those people's hearts, and they will believe the truth.
1 Peter 3:15-16(NLT):
15)...if you are asked about your Christian hope, always be ready to explain it. 16) But you must do this in a gentle and respectful way. Keep your conscience clear. Then if people speak evil against you, they will be ashamed when they see what a good life you live because you belong to Christ.