Deuteronomy 31:20-22

CKJV_Strongs(i)
  20 H935 For when I shall have brought H127 them into the land H7650 which I swore H1 unto their fathers, H2100 that flows H2461 with milk H1706 and honey; H398 and they shall have eaten H7646 and filled H1878 themselves, and grown fat; H6437 then will they turn H312 unto other H430 gods, H5647 and serve H5006 them, and provoke H6565 me, and break H1285 my covenant.
  21 H7227 And it shall come to pass, when many H7451 evils H6869 and troubles H4672 are happened H7892 them, that this song H6030 shall testify H6440 against H5707 them as a witness; H7911 for it shall not be forgotten H6310 out of the mouths H2233 of their seed: H3045 for I know H3336 their imagination H6213 which they go about, H3117 even now, H935 before I have brought H776 them into the land H7650 which I swore.
  22 H4872 Moses H3789 therefore wrote H7892 this song H3117 the same day, H3925 and taught H1121 it the sons H3478 of Israel.