What Does The Bible Mean by Examine Yourself

1Co 11:28 But let a man examine himself, and so let him eat of that bread, and drink of that cup. 

Since the LORD Supper is done in Remembrance of Jesus and showing forth His death till He comes. Our examining would be about our fellowship with Jesus. 1John 1:6-7, If we say that we have fellowship with him, and walk in darkness, we lie, and do not the truth: But if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin. 

North Red Bank Baptist Church, a Free Grace Church, "Holding forth the Word of Life" as Remnant Believers, seeking to reach all people with the Good News of Jesus Christ, Whom we preach, warning every man, and teaching every man in all wisdom, that we may present every man perfect {mature} in Christ Jesus: We look at current events in light of Biblical truth with a prophetic perspective.