Introduction:
In the Bible, hair holds significant symbolic and cultural importance, often reflecting one's identity, status, and spiritual condition. It is mentioned in various contexts, from laws and vows to expressions of beauty and shame. This entry explores the biblical references to hair, its symbolic meanings, and its role in the lives of biblical figures.

Old Testament References:

1. Nazirite Vow:
One of the most notable references to hair in the Old Testament is the Nazirite vow, a special vow of dedication to God. Numbers 6:5 states, "For the entire period of his vow of separation, no razor shall pass over his head. He must be holy until the time of his consecration to the LORD is complete; he must let the hair of his head grow long." The uncut hair symbolized the individual's consecration and separation unto God.

2. Samson's Strength:
Samson, a Nazirite from birth, is a prominent figure whose hair is directly linked to his strength. Judges 16:17 reveals, "He told her all that was in his heart: 'No razor has ever come to my head, because I have been a Nazirite to God from my mother’s womb. If I am shaved, my strength will leave me, and I will become as weak as any other man.'" Samson's hair was a sign of his covenant with God, and its loss led to his downfall.

3. Cultural Significance:
Hair also held cultural significance in ancient Israel. For instance, in 2 Samuel 14:26, Absalom's hair is described: "When he cut the hair of his head—he shaved it at the end of every year because it became too heavy for him—the hair weighed two hundred shekels by the royal standard." Absalom's hair was a symbol of his beauty and pride.

New Testament References:

1. Women's Hair as a Covering:
In 1 Corinthians 11:15, Paul discusses the role of hair in the context of worship and propriety: "But if a woman has long hair, it is her glory? For long hair is given to her as a covering." Here, hair is seen as a natural covering and a sign of a woman's glory and honor.

2. Adornment and Modesty:
The New Testament also addresses the issue of adornment. In 1 Peter 3:3, women are advised, "Your beauty should not come from outward adornment such as braided hair or gold jewelry or fine clothes." This passage emphasizes inner beauty and modesty over external appearance.

3. Symbol of Devotion:
In Luke 7:38, a woman anoints Jesus' feet with her tears and wipes them with her hair, demonstrating deep devotion and humility: "As she stood behind Him at His feet weeping, she began to wet His feet with her tears and wipe them with her hair. Then she kissed His feet and anointed them with the perfume." Her hair becomes a tool of worship and reverence.

Symbolic Meanings:

1. Strength and Vow:
Hair often symbolizes strength and a vow of dedication, as seen in the Nazirite vow and the account of Samson. It represents a visible sign of one's commitment to God.

2. Glory and Honor:
In the New Testament, hair is associated with glory and honor, particularly for women. It serves as a natural covering and a reflection of one's dignity.

3. Humility and Devotion:
The act of using hair in acts of worship, as seen in the anointing of Jesus' feet, highlights humility and devotion. It signifies a personal and intimate expression of faith.

Cultural and Historical Context:
In biblical times, hair was an important aspect of personal identity and social status. It could signify mourning, as in the case of shaving one's head (Job 1:20), or be a source of pride and beauty. The care and presentation of hair were often reflective of one's spiritual and social standing.

Conclusion:
The biblical references to hair encompass a wide range of meanings and implications, from spiritual vows and divine strength to cultural norms and personal expressions of faith. Hair serves as a multifaceted symbol throughout the Scriptures, reflecting the complex interplay between the physical and spiritual realms.