Matthew 5:47
And if you greet only your relatives, that's no great thing you're doing, is it? Even the unbelievers do the same, don't they?
Matthew 5:20
because I tell you, unless your righteousness greatly exceeds that of the scribes and Pharisees, you will never enter the kingdom from heaven!"
Luke 6:32
"If you love those who love you, what thanks do you deserve? Why, even sinners love those who love them.
Luke 10:4-5
Don't carry a wallet, a traveling bag, or sandals, and don't greet anyone on the way.
1 Peter 2:20
What good does it do if, when you sin, you patiently receive punishment for it? But if you suffer for doing good and receive it patiently, you have God's approval.
Matthew 10:12
As you enter the house, greet its occupants.