Acts 2:1

And when the day of Pentecost was fully come, they were all with one accord in one place.

Acts 20:16

For Paul had determined to sail by Ephesus, because he would not spend the time in Asia: for he hasted, if it were possible for him, to be at Jerusalem the day of Pentecost.

1 Corinthians 16:8

But I shall tarry at Ephesus until Pentecost.

Exodus 23:16

And the feast of harvest, the first-fruits of thy labors, which thou hast sown in the field: and the feast of in-gathering, which is in the end of the year, when thou hast gathered in thy labors out of the field.

Exodus 34:22

And thou shalt observe the feast of weeks, of the first-fruits of wheat-harvest, and the feast of in-gathering at the year's end.

Leviticus 23:15-21

And ye shall count to you from the morrow after the sabbath, from the day that ye brought the sheaf of the wave-offering; seven sabbaths shall be complete:

Numbers 28:16-31

And on the fourteenth day of the first month is the passover of the LORD.

Deuteronomy 16:9-12

Seven weeks shalt thou number to thee: begin to number the seven weeks from the time when thou beginnest to put the sickle to the corn.

2 Chronicles 5:13

It came even to pass, as the trumpeters and singers were as one, to make one sound to be heard in praising and thanking the LORD; and when they lifted up their voice with the trumpets and cymbals and instruments of music, and praised the LORD, saying, For he is good; for his mercy endureth for ever: that then the house was filled with a cloud, even the house of the LORD;

2 Chronicles 30:12

Also in Judah the hand of God was to give them one heart to do the commandment of the king and of the princes, by the word of the LORD.

Psalm 133:1

A Song of degrees of David. Behold, how good and how pleasant it is for brethren to dwell together in unity!

Jeremiah 32:39

And I will give them one heart, and one way, that they may fear me for ever, for the good of them, and of their children after them:

Zephaniah 3:9

For then will I turn to the people a pure language, that they may all call upon the name of the LORD, to serve him with one consent.

Acts 1:13-15

And when they had come in, they went into an upper room, where abode both Peter, and James, and John, and Andrew, Philip, and Thomas, Bartholomew, and Matthew, James the son of Alpheus, and Simon Zelotes, and Judas the brother of James.

Acts 2:46

And they, continuing daily with one accord in the temple, and breaking bread from house to house, ate their food with gladness and singleness of heart,

Acts 4:24

And when they heard that, they lifted up their voice to God with one accord, and said, Lord, thou art God, who hast made heaven, and earth, and the sea, and all that is in them;

Acts 4:32

And the multitude of them that believed were of one heart, and of one soul: neither said any of them that aught of the things which he possessed was his own; but they had all things common.

Acts 5:12

And by the hands of the apostles were many signs and wonders wrought among the people; (and they were all with one accord in Solomon's porch.

Romans 15:6

That ye may with one mind and one mouth glorify God, even the Father of our Lord Jesus Christ.

Philippians 1:27

Only let your manner of life be as it becometh the gospel of Christ: that whether I come and see you, or else be absent, I may hear of your affairs, that ye stand fast in one spirit, with one mind striving together for the faith of the gospel;

Philippians 2:2

Fulfill ye my joy, that ye be like-minded, having the same love, being of one accord, of one mind.

Treasury of Scripture Knowledge

Bible References

The day

Acts 20:16
For Paul had determined to sail by Ephesus, because he would not spend the time in Asia: for he hasted, if it were possible for him, to be at Jerusalem the day of Pentecost.
Exodus 23:16
And the feast of harvest, the first-fruits of thy labors, which thou hast sown in the field: and the feast of in-gathering, which is in the end of the year, when thou hast gathered in thy labors out of the field.
Exodus 34:22
And thou shalt observe the feast of weeks, of the first-fruits of wheat-harvest, and the feast of in-gathering at the year's end.
Leviticus 23:15
And ye shall count to you from the morrow after the sabbath, from the day that ye brought the sheaf of the wave-offering; seven sabbaths shall be complete:
Numbers 28:16
And on the fourteenth day of the first month is the passover of the LORD.
Deuteronomy 16:9
Seven weeks shalt thou number to thee: begin to number the seven weeks from the time when thou beginnest to put the sickle to the corn.
1 Corinthians 16:8
But I shall tarry at Ephesus until Pentecost.

They

Acts 2:46
And they, continuing daily with one accord in the temple, and breaking bread from house to house, ate their food with gladness and singleness of heart,
Acts 1:13
And when they had come in, they went into an upper room, where abode both Peter, and James, and John, and Andrew, Philip, and Thomas, Bartholomew, and Matthew, James the son of Alpheus, and Simon Zelotes, and Judas the brother of James.
Acts 4:24
And when they heard that, they lifted up their voice to God with one accord, and said, Lord, thou art God, who hast made heaven, and earth, and the sea, and all that is in them;
Acts 5:12
And by the hands of the apostles were many signs and wonders wrought among the people; (and they were all with one accord in Solomon's porch.
2 Chronicles 5:13
It came even to pass, as the trumpeters and singers were as one, to make one sound to be heard in praising and thanking the LORD; and when they lifted up their voice with the trumpets and cymbals and instruments of music, and praised the LORD, saying, For he is good; for his mercy endureth for ever: that then the house was filled with a cloud, even the house of the LORD;
2 Chronicles 30:12
Also in Judah the hand of God was to give them one heart to do the commandment of the king and of the princes, by the word of the LORD.
Psalm 133:1
A Song of degrees of David. Behold, how good and how pleasant it is for brethren to dwell together in unity!
Jeremiah 32:39
And I will give them one heart, and one way, that they may fear me for ever, for the good of them, and of their children after them:
Zephaniah 3:9
For then will I turn to the people a pure language, that they may all call upon the name of the LORD, to serve him with one consent.
Romans 15:6
That ye may with one mind and one mouth glorify God, even the Father of our Lord Jesus Christ.
Philippians 1:27
Only let your manner of life be as it becometh the gospel of Christ: that whether I come and see you, or else be absent, I may hear of your affairs, that ye stand fast in one spirit, with one mind striving together for the faith of the gospel;
Philippians 2:2
Fulfill ye my joy, that ye be like-minded, having the same love, being of one accord, of one mind.

General references

Exodus 36:10
And he coupled the five curtains one to another: and the other five curtains he coupled one to another.
Leviticus 8:3
And assemble thou all the congregation to the door of the tabernacle of the congregation.
Leviticus 23:16
Even to the morrow after the seventh sabbath shall ye number fifty days; and ye shall offer a new meat-offering to the LORD.
Deuteronomy 16:9
Seven weeks shalt thou number to thee: begin to number the seven weeks from the time when thou beginnest to put the sickle to the corn.
Hebrews 13:1
Let brotherly love continue.