Here’s some plain language of scripture.
26:26. And whilst they were at supper, Jesus took bread and blessed and broke and gave to his disciples and said: Take ye and eat. This is my body.
This is my body He does not say, This is the figure of my bodybut This is my body. (2 Council of Nice, Act. 6.) Neither does he say in this, or with this is my body; but absolutely, This is my body: which plainly implies transubstantiation.