Read 2 Corinthians 13:5 & John 10:27-30

What does Paul urge the Christians in Corinth to do?  Once we belong to Jesus what can never happen?

Paul is not trying to scare believers into doubting their salvation.  Jesus Himself said that once we belong to Him, there is nothing that can change that.  Paul is, however, urging church members to make sure that they have given their hearts to Jesus in the first place.