Acts 2:1

AND when the day of Pentecost had come, they were all with one mind together.

1 Corinthians 16:8

But I will remain at Ephesus till Pentecost,

Hebrews 2:1

We ought therefore to attend the more to the things which we heard, lest at any time we should glide away [from them].

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 had come, they were all with one mind together.
1 Corinthians 16:8
But I will remain at Ephesus till Pentecost,
Hebrews 2:1
We ought therefore to attend the more to the things which we heard, lest at any time we should glide away [from them].