Wisdom of Solomon 2:24

21 Thus they reasoned, but they were led astray, for their wickedness blinded them, 22 and they did not know the secret purposes of God, nor hoped for the wages of holiness, nor discerned the prize for blameless souls; 23 for God created us for incorruption, and made us in the image of his own eternity, 24 but through the devil's envy death entered the world, and those who belong to his company experience it.

Date: 100-50 B.C.E.
* Dates are based on scholarly estimates

Athanasius On the Incarnation of the Word 5:2

2 For because of the Word dwelling with them, even their natural corruption did not come near them, as Wisdom also says : God made man for incorruption, and as an image of His own eternity; but by envy of the devil death came into the world. But when this had come to pass, men began to die, while corruption thence-forward prevailed against them, gaining even more than its natural power over the whole race, inasmuch as it had, owing to the transgression of the commandment, the threat of the Deity as a further advantage against them.

Date: 335 C.E.
* Dates are based on scholarly estimates