en_tn/lev/21/18.md

must not approach Yahweh

A priest had to meet specific physical standards in order to approach Yahweh. This does not imply that physical defects were the result of immorality or that all people with physical defects are unable to approach Yahweh.

one who is disfigured or deformed

"one whose body or face is deformed"

to offer the bread of his God

Here "bread" represents food in general. AT: "to make burnt offering of food on God's altar" (See: rc://en/ta/man/translate/figs-synecdoche)