"It shall be expedient"

1. 2 Ne. 25: 30
   30 And, inasmuch as it shall be expedient, ye must keep the performances and ordinances of God until the law shall be fulfilled which was given unto Moses.
2. D&C 47: 2
   2 Again, verily I say unto you that he can also lift up his voice in meetings, whenever it shall be expedient.