1 Corinthians 11:28
So, a person should examine himself [first] and then he should eat the bread and drink from the cup.
2 Corinthians 13:5
Put yourselves to a test; see if you are [really] in the faith [i.e., see if you are genuine Christians]; examine yourselves! Or, do you not realize that Jesus Christ is in your hearts, unless [of course] you fail the test [i.e., unless you are counterfeit Christians].
Galatians 6:4
But let each person test his own accomplishments so that he can determine if he should get credit for them or if his neighbor should.
Matthew 5:23-24
Therefore, if you are offering your [sacrificial] gift on the Altar and [just then] you remember that your brother has a grievance against you,
1 Corinthians 11:31
But if we [had] examined ourselves [properly], we would not be [i.e., not have been] judged [i.e., with sickness and death. See verse 30].
1 John 3:20-21
But, if our hearts condemn us [for not demonstrating God's love for others], surely God, who is greater than our hearts [will also condemn us], because He knows all things.