Judith 8:26
25 In spite of everything let us give thanks to the Lord our God, who is putting us to the test as he did our ancestors. 26 Remember what he did with Abraham, and how he tested Isaac, and what happened to Jacob in Syrian Mesopotamia, while he was tending the sheep of Laban, his mother's brother. 27 For he has not tried us with fire, as he did them, to search their hearts, nor has he taken vengeance on us; but the Lord scourges those who are close to him in order to admonish them." 28 Then Uzziah said to her, "All that you have said was spoken out of a true heart, and there is no one who can deny your words.
Pseudo Philo Biblical Antiquities 32:2
2 When they were jealous of him, God said to him: "Sacrifice for me your child and offer for me that which I gave to you." Abraham did not contradict him and immediately went forth. As he went, he said to his son: "Now, my son, I offer you for a burnt offering and surrender you to him who gave you to me." 3 The son said to his father: "Listen to me, father. If a lamb from the flock is accepted as an offering to the Lord as a pleasant aroma, and if sheep are destined for slaughter due to the sins of men, yet man is set to inherit the earth, how can you now say to me: 'Come and inherit a life secure, and a time that cannot be measured'? What if I had not been born in the world to be offered as a sacrifice to him who made me? And this shall be my greatest fortune among all men, for no other such thing shall happen; and through me shall generations be taught, and by me shall peoples learn that the Lord has deemed the soul of a man worthy to be a sacrifice to him."
Notes and References
"... Given the necessity of finding something praiseworthy concerning Isaac in the story, an interpreter might still come up with an indication, no matter how slight, that Isaac had consented to be sacrificed. And slight indication there was. After all, the text makes no mention of Isaac resisting or trying to flee. It simply says: 'When they came to the place of which God had told him, Abraham built an altar there, and laid the wood in order, and bound Isaac his son, and laid him on the altar upon the wood' (Genesis 22:9). Is not this silence eloquent? After all, Abraham is an old man—well over a hundred, his age at Isaac's birth (Genesis 21:5). We do not know how old Isaac is, but he is certainly old enough to ask the question that he asks about the sacrificial lamb, and old enough to carry the wood and the fire. Conceivably, then, such a boy or young man could not have been tied up by his aged father if he himself had struggled or attempted to flee. Thus, if Abraham was indeed able to go ahead as planned and offer Isaac as a sacrifice, could it have been in any way other than with Isaac's active cooperation? A number of sources go out of their way to suggest that Isaac was indeed a willing participant ..."
Kugel, James L. The Bible as it Was (pp. 174-175) Harvard University Press, 1998