IV Maccabees 13:11-21

11 And one said, Courage, brother; and another, Nobly endure.
12 And another, Remember of what stock ye are; and by the hand of our father Isaac endured to be slain for the sake of piety.
13 And one and all, looking on each other serene and confident, said, Let us sacrifice with all our heart our souls to God who gave them, and employ our bodies for the keeping of the law.
14 Let us not fear him who thinketh he killeth;
15 for great is the trial of soul and danger of eternal torment laid up for those who transgress the commandment of God.
16 Let us arm ourselves, therefore, in the abnegation of the divine reasoning.
17 If we suffer thus, Abraham, and Isaac, and Jacob will receive us, and all the fathers will commend us.
18 And as each one of the brethren was haled away, the rest exclaimed, Disgrace us not, O brother, nor falsify those who died before you.
19 Now you are not ignorant of the charm of brotherhood, which the Divine and all wise Providence hath imparted through fathers to children, and hath engendered through the mother's womb.
20 In which these brothers having remained an equal time, and having been formed for the same period, and been increased by the same blood, and having been perfected through the same principle of life,
21 and having been brought forth at equal intervals, and having sucked milk from the same fountains, hence their brotherly souls are reared up lovingly together;

The Brenton translation of the Septuagint is in the public domain.