For even the Son of Man came not to be served but to serve others and to give his life as a ransom for many. Matthew 20:28
You, my brothers and sisters, were called to be free. But do not use your freedom to indulge the flesh; rather, serve one another humbly in love. Galatians 5:13
Do nothing out of selfish ambition or vain conceit. Rather, in humility value others above yourselves, not looking to your own interests but each of you to the interests of the others. Philippians 2:3-4