Verses with the word once in the New Testament (25 verses):

Luke 13:25
When once the master of the house is risen up, and hath shut to the door, and ye begin to stand without, and to knock at the door, saying, Lord, Lord, open unto us; and he shall answer and say unto you, I know you not whence ye are:

Luke 23:18
And they cried out all at once, saying, Away with this man, and release unto us Barabbas:

Romans 6:10
For in that he died, he died unto sin once: but in that he liveth, he liveth unto God.

Romans 7:9
For I was alive without the law once: but when the commandment came, sin revived, and I died.

1 Corinthians 15:6
After that, he was seen of above five hundred brethren at once; of whom the greater part remain unto this present, but some are fallen asleep.

2 Corinthians 11:25
Thrice was I beaten with rods, once was I stoned, thrice I suffered shipwreck, a night and a day I have been in the deep;

Galatians 1:23
But they had heard only, That he which persecuted us in times past now preacheth the faith which once he destroyed.

Ephesians 5:3
But fornication, and all uncleanness, or covetousness, let it not be once named among you, as becometh saints;

Philippians 4:16
For even in Thessalonica ye sent once and again unto my necessity.

1 Thessalonians 2:18
Wherefore we would have come unto you, even I Paul, once and again; but Satan hindered us.

Hebrews 6:4
For it is impossible for those who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the Holy Ghost,

Hebrews 7:27
Who needeth not daily, as those high priests, to offer up sacrifice, first for his own sins, and then for the people's: for this he did once, when he offered up himself.

Hebrews 9:7
But into the second went the high priest alone once every year, not without blood, which he offered for himself, and for the errors of the people:

Hebrews 9:12
Neither by the blood of goats and calves, but by his own blood he entered in once into the holy place, having obtained eternal redemption for us.

Hebrews 9:26
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.

Hebrews 9:27
And as it is appointed unto men once to die, but after this the judgment:

Hebrews 9:28
So Christ was once offered to bear the sins of many; and unto them that look for him shall he appear the second time without sin unto salvation.

Hebrews 10:2
For then would they not have ceased to be offered? because that the worshippers once purged should have had no more conscience of sins.

Hebrews 10:10
By the which will we are sanctified through the offering of the body of Jesus Christ once for all.

Hebrews 12:26
Whose voice then shook the earth: but now he hath promised, saying, Yet once more I shake not the earth only, but also heaven.

Hebrews 12:27
And this word, Yet once more, signifieth the removing of those things that are shaken, as of things that are made, that those things which cannot be shaken may remain.

1 Peter 3:18
For Christ also hath once suffered for sins, the just for the unjust, that he might bring us to God, being put to death in the flesh, but quickened by the Spirit:

1 Peter 3:20
Which sometime were disobedient, when once the longsuffering of God waited in the days of Noah, while the ark was a preparing, wherein few, that is, eight souls were saved by water.

Jude 1:3
Beloved, when I gave all diligence to write unto you of the common salvation, it was needful for me to write unto you, and exhort you that ye should earnestly contend for the faith which was once delivered unto the saints.

Jude 1:5
I will therefore put you in remembrance, though ye once knew this, how that the Lord, having saved the people out of the land of Egypt, afterward destroyed them that believed not.