Acts 2:1

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

1 Corinthians 16:8

But I shall stay at Ephesus till Pentecost. For a great and effectual door is opened to me,

Hebrews 2:1

For this reason we ought the more earnestly to attend to what we have heard, least by any means we should be found deficient.

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 fully come, they were all met together with one accord.
1 Corinthians 16:8
But I shall stay at Ephesus till Pentecost. For a great and effectual door is opened to me,
Hebrews 2:1
For this reason we ought the more earnestly to attend to what we have heard, least by any means we should be found deficient.