Deuteronomy 31:13-23

13 And their sons who have not known shall hear, and shall learn to fear the Lord thy God all the days that they live upon the land, into which ye go over Jordan to inherit it.
14 And the Lord said to Moses, Behold, the days of thy death are at hand; call Joshua, and stand ye by the doors of the tabernacle of testimony, and I will give him a charge. And Moses and Joshua went to the tabernacle of testimony, and stood by the doors of the tabernacle of testimony.
15 And the Lord descended in a cloud, and stood by the doors of the tabernacle of testimony; and the pillar of the cloud stood by the doors of the tabernacle of testimony.
16 And the Lord said to Moses, Behold, thou shalt sleep with thy fathers, and this people will arise and go a whoring after the strange gods of the land, into which they are entering: and they will forsake me, and break my covenant, which I made with them.
17 And I will be very angry with them in that day, and I will leave them and turn my face away from them, and they shall be devoured; and many evils and afflictions shall come upon them; and they shall say in that day, Because the Lord my God is not with me, these evils have come upon me.
18 And I will surely turn away my face from them in that day, because of all their evil doings which they have done, because they turned aside after strange gods.
19 And now write the words of this song, and teach it to the children of Israel, and ye shall put it into their mouth, that this song may witness for me among the children of Israel to their face.
20 For I will bring them into the good land, which I sware to their fathers, to give to them a land flowing with milk and honey: and they shall eat and be filled and satisfy ; then will they turn aside after other gods, and serve them, and they will provoke me, and break my covenant.
21 And this song shall stand up to witness against them; for they shall not forget it out of their mouth, or out of the mouth of their seed; for I know their wickedness, what they are doing here this day, before I have brought them into the good land, which I sware to their fathers.
22 And Moses wrote this song in that day, and taught it to the children of Israel.
23 And he charged Joshua, and said, Be courageous and strong, for thou shalt bring the sons of Israel into the land, which the Lord sware to them, and he shall be with thee.

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