1 Corinthians 1:5-15 CEB

5 That is, you were made rich through him in everything: in all your communication and every kind of knowledge,
6 in the same way that the testimony about Christ was confirmed with you.
7 The result is that you aren't missing any spiritual gift while you wait for our Lord Jesus Christ to be revealed.
8 He will also confirm your testimony about Christ until the end so that you will be blameless on the day of our Lord Jesus Christ.
9 God is faithful, and you were called by him to partnership with his Son, Jesus Christ our Lord.

Rival groups in Corinth

10 Now I encourage you, brothers and sisters, in the name of our Lord Jesus Christ: Agree with each other and don't be divided into rival groups. Instead, be restored with the same mind and the same purpose.

References for 1 Corinthians 1:10

      11 My brothers and sisters, Chloe's people gave me some information about you, that you're fighting with each other.
      12 What I mean is this: that each one of you says, "I belong to Paul,""I belong to Apollos,""I belong to Cephas,""I belong to Christ."
      13 Has Christ been divided? Was Paul crucified for you, or were you baptized in Paul's name?
      14 Thank God that I didn't baptize any of you, except Crispus and Gaius,
      15 so that nobody can say that you were baptized in my name!