I Esdras 8:84-94

84 Therefore now shall ye not join your daughters unto their sons, neither shall ye take their daughters unto your sons.
85 Moreover ye shall never seek to have peace with them, that ye may be strong, and eat the good things of the land, and that ye may leave the inheritance of the land unto your children for evermore.
86 And all that is befallen is done unto us for our wicked works and great sins; for thou, O Lord, didst make our sins light,
87 And didst give unto us such a root: but we have turned back again to transgress thy law, and to mingle ourselves with the uncleanness of the nations of the land.
88 Mightest not thou be angry with us to destroy us, till thou hadst left us neither root, seed, nor name?
89 O Lord of Israel, thou art true: for we are left a root this day.
90 Behold, now are we before thee in our iniquities, for we cannot stand any longer by reason of these things before thee.
91 And as Esdras in his prayer made his confession, weeping, and lying flat upon the ground before the temple, there gathered unto him from Jerusalem a very great multitude of men and women and children: for there was great weeping among the multitude.
92 Then Jechonias the son of Jeelus, one of the sons of Israel, called out, and said, O Esdras, we have sinned against the Lord God, we have married strange women of the nations of the land, and now is all Israel aloft.
93 Let us make an oath to the Lord, that we will put away all our wives, which we have taken of the heathen, with their children,
94 Like as thou hast decreed, and as many as do obey the law of the Lord.

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