Acts 2:1

When the day of Pentecost was fully come, and they were all together in the same place,

1 Corinthians 16:8

I am staying for the present in Ephesus, until Pentecost;

Hebrews 2:1

For this reason we must pay the more earnest heed to the things which we have heard, for fear we should drift away.

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
When the day of Pentecost was fully come, and they were all together in the same place,
1 Corinthians 16:8
I am staying for the present in Ephesus, until Pentecost;
Hebrews 2:1
For this reason we must pay the more earnest heed to the things which we have heard, for fear we should drift away.