1 Corinthians 11:28

26 For as often as you eat this bread and drink this cup, you proclaim the Lord’s death until He comes.

27 Therefore, whoever eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty of sinning against the body and blood of the Lord.

Each one must examine himself before he eats of the bread and drinks of the cup.

29 For anyone who eats and drinks without recognizing the body eats and drinks judgment on himself.

30 That is why many among you are weak and sick, and a number of you have fallen asleep.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
Each one must examine himself before he eats of the bread and drinks of the cup.
KJV
But let a man examine himself, and so let him eat of that bread, and drink of that cup.
WEB
But let a man examine himself, and so let him eat of the bread and drink of the cup.
ASV
But let a man prove himself, and so let him eat of the bread, and drink of the cup.
DARBY
But let a man prove himself, and thus eat of the bread, and drink of the cup.
BLB
But let a man examine himself, and thus let him eat of the bread, and let him drink of the cup.
ÅB
Men hvert menneske prøve seg selv, og så spise han av brødet og drikke av kalken!
OTB
Hver person bør reflektere over seg selv før de tar del i brødet og drikker av begeret.
B1930
Men hvert menneske prøve sig selv, og så ete han av brødet og drikke av kalken!

Study notes (Tyndale)

Original text and word study

Cross references