A lying witness, also referred to as a false witness, is an individual who deliberately provides false testimony or evidence, particularly in a legal context. The concept of a lying witness is addressed multiple times in the Bible, emphasizing the moral and spiritual implications of bearing false witness against one's neighbor.

Biblical References:

1. The Ten Commandments:
The prohibition against bearing false witness is explicitly stated in the Ten Commandments. Exodus 20:16 declares, "You shall not bear false witness against your neighbor." This commandment underscores the importance of truthfulness and integrity in maintaining justice and community harmony.

2. Proverbs on False Witness:
The Book of Proverbs frequently addresses the issue of false testimony. Proverbs 6:16-19 lists "a false witness who pours out lies" among the seven things the Lord detests. Proverbs 19:5 warns, "A false witness will not go unpunished, and one who utters lies will not escape." These verses highlight the moral consequences and divine disapproval associated with lying.

3. Legal and Social Implications:
In ancient Israel, the legal system was heavily reliant on the testimony of witnesses. Deuteronomy 19:15-21 outlines the procedure for dealing with a false witness, emphasizing the need for multiple witnesses to establish a matter and prescribing punishment for those who bear false testimony. This passage reflects the seriousness with which false witnessing was regarded in maintaining justice.

4. New Testament Teachings:
The New Testament continues to uphold the principle of truthfulness. Jesus Himself condemns false testimony in Matthew 15:19 , where He lists "false testimony" among the evils that come from the heart. The apostle Paul, in Ephesians 4:25 , exhorts believers to "put away falsehood and speak truthfully to your neighbor."

5. Spiritual Consequences:
Bearing false witness is not only a legal issue but also a spiritual one. Revelation 21:8 warns that "all liars" will have their part in the lake of fire, indicating the eternal consequences of unrepentant deceit. This underscores the gravity of falsehood in the eyes of God.

Moral and Ethical Considerations:

The act of bearing false witness is fundamentally a violation of trust and an affront to the character of God, who is the embodiment of truth. It disrupts social order, damages reputations, and can lead to unjust outcomes. The Bible consistently calls for honesty and integrity, urging believers to reflect God's truthfulness in their interactions with others.

Practical Application:

For Christians, the call to avoid being a lying witness extends beyond legal settings to everyday life. It involves a commitment to truth in all forms of communication, whether in personal relationships, business dealings, or public discourse. The biblical mandate is clear: followers of Christ are to be people of truth, reflecting the character of their Savior in all they say and do.