Whether this change is wrought instantaneously?

❌ Objection 1 : It seems that this change is not wrought instantaneously, but successively. For in this change there is first the substance of bread, and afterwards the substance of Christ's body. Neither, then, is in the same instant, but in two instants. But there is a mid-time between every two instants. Therefore this change must take place according to the succession of time, which is between the last instant in which the bread is there, and the first instant in which the body of Christ is present.

❌ Objection 2 : Further, in every change something is "in becoming" and something is "in being." But these two things do not exist at the one time for, what is "in becoming," is not yet, whereas what is "in being," already is. Consequently, there is a before and an after in such change: and so necessarily the change cannot be instantaneous, but successive.

❌ Objection 3 : Further, Ambrose says (De Sacram. iv) that this sacrament "is made by the words of Christ." But Christ's words are pronounced successively. Therefore the change takes place successively.