Acts 18:18

And Paul, abiding after this yet many days with the brethren, having taken leave of them, was sailing away to Syria, and with him Priscilla and Aquila; having shaven his head in Cenchrea; for he had a vow.

Acts 21:23-24

Do this, therefore, which we say to you: we have four men who have a vow on them;

Philippians 3:8-9

Nay, more, I even account all things to be loss for the excellency of the knowledge of Christ Jesus my Lord, for whose sake I suffered the loss of all things, and account them refuse, that I may gain Christ.

Treasury of Scripture Knowledge

Summary

And if any man die very suddenly by him, and he hath defiled the head of his consecration; then he shall shave his head in the day of his cleansing, on the seventh day shall he shave it.

Bible References

Shave

Acts 18:18
And Paul, abiding after this yet many days with the brethren, having taken leave of them, was sailing away to Syria, and with him Priscilla and Aquila; having shaven his head in Cenchrea; for he had a vow.
Acts 21:23
Do this, therefore, which we say to you: we have four men who have a vow on them;
Philippians 3:8
Nay, more, I even account all things to be loss for the excellency of the knowledge of Christ Jesus my Lord, for whose sake I suffered the loss of all things, and account them refuse, that I may gain Christ.