What does the Bible say about the anointing from the Holy Spirit?

According to 1 John 2:20, every believer has an unction from the Holy One, referring to the Holy Spirit. This 'unction' conveys spiritual insight and understanding, allowing believers to discern truth from lies, especially concerning the deity of Christ. This understanding is essential for perseverance in faith and protects them against false teachings. John emphasizes that this unction comes from Jesus Christ, and it is through the Spirit that believers are taught all things needed for salvation, ensuring they remain steadfast in their faith.