19 And, beloved brethren, that the benefit of patience may still more shine forth, let us consider, on the contrary, what mischief impatience may cause. For as patience is the benefit of Christ, so, on the other hand, impatience is the mischief of the devil; and as one in whom Christ dwells and abides is found patient, so he appears always impatient whose mind the wickedness of the devil possesses. Briefly let us look at the very beginnings. The devil suffered with impatience that man was made in the image of God. Hence he was the first to perish and to ruin others.
Adam, contrary to the heavenly command with respect to the deadly food, by impatience fell into death; nor did he keep the grace received from God under the guardianship of patience. And in order that Cain should put his brother to death, he was impatient of his sacrifice and gift; and in that Esau descended from the rights of the first-born to those of the younger, he lost his priority by impatience for the pottage. Why was the Jewish people faithless and ungrateful in respect of the divine benefits?
Was it not the crime of impatience, that they first departed from God? Not being able to bear the delays of Moses conferring with God, they dared to ask for profane gods, that they might call the head of an ox and an earthen image leaders of their march; nor did they ever desist from their impatience, until, impatient always of docility and of divine admonition, they put to death their prophets and all the righteous men, and plunged even into the crime of the crucifixion and bloodshedding of the Lord.
Moreover, impatience makes heretics in the Church, and, after the likeness of the Jews, drives them in opposition to the peace and charity of Christ as rebels, to hostile and raging hatred. And, not at length to enumerate single cases, absolutely everything which patience, by its works, builds up to glory, impatience casts down into ruin.
Source: The Treatises of Cyprian (New Advent)