Deuteronomy 31:16-22 New Revised Standard Version Catholic Edition (NRSVCE)
16 The Lord said to Moses, “Soon you will lie down with your ancestors. Then this people will begin to prostitute themselves to the foreign gods in their midst, the gods of the land into which they are going; they will forsake me, breaking my covenant that I have made with them. 17 My anger will be kindled against them in that day. I will forsake them and hide my face from them; they will become easy prey, and many terrible troubles will come upon them. In that day they will say, ‘Have not these troubles come upon us because our God is not in our midst?’ 18 On that day I will surely hide my face on account of all the evil they have done by turning to other gods. 19 Now therefore write this song, and teach it to the Israelites; put it in their mouths, in order that this song may be a witness for me against the Israelites. 20 For when I have brought them into the land flowing with milk and honey, which I promised on oath to their ancestors, and they have eaten their fill and grown fat, they will turn to other gods and serve them, despising me and breaking my covenant. 21 And when many terrible troubles come upon them, this song will confront them as a witness, because it will not be lost from the mouths of their descendants. For I know what they are inclined to do even now, before I have brought them into the land that I promised them on oath.” 22 That very day Moses wrote this song and taught it to the Israelites.