Acts 2:1

SO when the day of Pentecost was fully come, they were all with unanimity assembled together.

1 Corinthians 16:8

But I shall abide at Ephesus until the Pentecost:

Hebrews 2:1

FOR this reason we ought to attend more diligently to the things which have been heard, lest by any means we let them flow by us.

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
SO when the day of Pentecost was fully come, they were all with unanimity assembled together.
1 Corinthians 16:8
But I shall abide at Ephesus until the Pentecost:
Hebrews 2:1
FOR this reason we ought to attend more diligently to the things which have been heard, lest by any means we let them flow by us.