Matthew 6:17

But when you fast, put oil on your head [as you normally would to groom your hair] and wash your face

Ruth 3:3

So wash and anoint yourself [with olive oil], then put on your [best] clothes, and go down to the threshing floor; but stay out of the man’s sight until he has finished eating and drinking.

2 Samuel 12:20

Then David got up from the ground, washed, anointed himself [with olive oil], changed his clothes, and went into the house of the Lord and worshiped. Then he came [back] to his own house, and when he asked, they set food before him and he ate.

2 Samuel 14:2

So Joab sent word to Tekoa and had a wise woman brought from there and told her, “Please pretend to be a mourner, and put on mourning clothes, and do not anoint yourself with oil, but act like a woman who has for many days been in mourning for the dead.

Ecclesiastes 9:8

Let your clothes always be white [with purity], and do not let the oil [of gladness] be lacking on your head.

Daniel 10:2-3

In those days I, Daniel, had been mourning for three entire weeks.

Treasury of Scripture Knowledge

Summary

But thou, when thou fastest, anoint thine head, and wash thy face;

General references

Bible References

Anoint

Ruth 3:3
So wash and anoint yourself [with olive oil], then put on your [best] clothes, and go down to the threshing floor; but stay out of the man’s sight until he has finished eating and drinking.
2 Samuel 14:2
So Joab sent word to Tekoa and had a wise woman brought from there and told her, “Please pretend to be a mourner, and put on mourning clothes, and do not anoint yourself with oil, but act like a woman who has for many days been in mourning for the dead.
Ecclesiastes 9:8
Let your clothes always be white [with purity], and do not let the oil [of gladness] be lacking on your head.
Daniel 10:2
In those days I, Daniel, had been mourning for three entire weeks.

General references

Luke 7:46
You did not [even] anoint My head with [ordinary] oil, but she has anointed My feet with [costly and rare] perfume.