"Once in"

1. Ex. 30: 10
     10 And Aaron shall make an atonement upon the horns of it once in a year with the blood of the sin offering of atonements: once in the year shall he make atonement upon it throughout your generations: it is most holy unto the Lord.
2. 1 Kgs. 10: 22
     22 For the king had at sea a navy of Tharshish with the navy of Hiram: once in three years came the navy of Tharshish, bringing gold, and silver, ivory, and apes, and peacocks.
3. Neh. 5: 18
     18 Now that which was prepared for me daily was one ox and six choice sheep; also fowls were prepared for me, and once in ten days store of all sorts of wine: yet for all this required not I the bread of the governor, because the bondage was heavy upon this people.
4. Heb. 9: 26
     26 For then must he often have suffered since the foundation of the world: but now once in the end of the world hath he appeared to put away sin by the sacrifice of himself.
5. Alma 32: 11
     11 And moreover, I would ask, do ye suppose that ye must not worship God only once in a week?
6. D&C 20: 61
     61 The several elders composing this church of Christ are to meet in conference once in three months, or from time to time as said conferences shall direct or appoint;