Chapter 18, “The Persons to Be Communed” pp. 146-151
Walther reminds us that there are four basic qualifications to come for communion. [Those] “1. who have already been baptized; 2. who are able to examine themselves; 3. about whom it cannot be proven that they are non-Christians or erring believers and who would therefore receive the Sacrament unworthily; and finally, 4. in whom no reason is found that they first need to be reconciled or to make restitution” (p. 146).
On p. 147 Walther observes that people may need to show their understanding in different ways. The example of one who cannot speak is used to illustrate. The person should be able to demonstrate a desire but need not be able to explain in the same terms as the general public. Walther also advises that the pastor is not making an exhaustive survey of the communicants’ doctrine but merely being satisfied that he is a Christian. The example given on p. 148 is that of Judas, who received the Supper. Yet he goes on to say the communicant must confess the true presence of Jesus’ body received by all communicants. It seems then there is a little variation - be certain but accepting.