1 Corinthians 16:13-18

Watch ye, stand fast in the faith, quit you like men, be strong. Let all your things be done with charity. I beseech you, brethren, (ye know the house of Stephanas, that it is the firstfruits of Achaia, and that they have addicted themselves to the ministry of the saints,) that ye submit yourselves unto such, and to every one that helpeth with us, and laboureth. I am glad of the coming of Stephanas and Fortunatus and Achaicus: for that which was lacking on your part they have supplied. For they have refreshed my spirit and your's: therefore acknowledge ye them that are such.