1 Corinthians 11:28
But let a man examine himself
Whether he has a true sense of sin, sorrow and repentance for it; otherwise he will see no need of a Saviour, nor will he look to Christ for salvation, or be thankful to him for redemption by him; all which are necessary in a due observance of this ordinance; also, whether he is in the faith, whether he is a partaker of the true grace of faith, which is attended with good works, and shows itself by love to Christ, and to the saints; whereby a man goes out of himself to Christ for spiritual food and strength, peace and comfort, righteousness, life, and salvation; and by which he receives all from Christ, and gives him all the glory: this is absolutely necessary to his right and comfortable partaking of the Lord's supper, since without faith he cannot discern the Lord's body, nor, in a spiritual sense, eat his flesh, and drink his blood, nor attend on the ordinance in a manner acceptable unto God. Let him also examine and try whether he is sound in the doctrine of faith; or let him prove himself to be so, or show that he is one that is approved thereby; to whom the word of faith has come with power, and who has received it in the love of it, and firmly believes it; since an heretic is to be rejected from the communion of the church, and to be debarred the ordinances of it: let him examine himself, whether Christ is in him, whether he is revealed to him, and in him, as God's way of salvation, and the hope of glory; whether he is formed in his soul, his Spirit put, and his grace implanted there; since if Christ is not within, it will be of no avail to partake of the outward symbols of his body and blood. But if a man, upon reflection, under the influence and testimony of the Spirit, can come to a satisfaction in these things, however mean and unworthy he may seem in his own sight, let him come to the table of the Lord, and welcome.
And so let him eat of that bread, and drink of that cup;
none should discourage or hinder him; nor should he deprive himself of such a privilege, to which he has an undoubted right. There seems to be an allusion in these words to what the master of the family used at the passover, when he said F26,
``everyone that is hungry, (lwkyw yty) , "let him come and eat", and everyone that hath need or ought, let him keep the passover.''
F26 Haggadah Shel Pesach, p. 4.