Acts 2:1

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

1 Corinthians 16:8

But I will stay at Ephesus till Pentecost.

Hebrews 2:1

Therefore we ought to give the more earnest heed to the things which we have heard, lest at any time we should let them slip.

Treasury of Scripture Knowledge

Summary

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

Bible References

General references

Acts 2:1
And when the day of Pentecost was come, they were all with one accord in one place.
1 Corinthians 16:8
But I will stay at Ephesus till Pentecost.
Hebrews 2:1
Therefore we ought to give the more earnest heed to the things which we have heard, lest at any time we should let them slip.