Definition and Context
Adultery, as defined in the Bible, refers to the act of a married person engaging in sexual relations with someone other than their spouse. This act is considered a grave sin and a violation of the marital covenant established by God. The term "adulterers" refers to those who commit this sin.

Old Testament References
The Old Testament explicitly condemns adultery, emphasizing its severity. In the Ten Commandments, God commands, "You shall not commit adultery" (Exodus 20:14). This commandment underscores the sanctity of marriage and the importance of fidelity.

The consequences of adultery in the Old Testament were severe. Leviticus 20:10 states, "If a man commits adultery with another man's wife—if he commits adultery with his neighbor's wife—both the adulterer and the adulteress must surely be put to death." This reflects the seriousness with which God views the breach of the marital covenant.

The book of Proverbs also warns against the dangers and consequences of adultery. Proverbs 6:32-33 states, "He who commits adultery lacks judgment; whoever does so destroys himself. Wounds and dishonor will befall him, and his reproach will never be wiped away."

New Testament Teachings
In the New Testament, Jesus expands on the understanding of adultery, emphasizing not only the physical act but also the condition of the heart. In the Sermon on the Mount, Jesus teaches, "But I tell you that anyone who looks at a woman to lust after her has already committed adultery with her in his heart" (Matthew 5:28). This teaching highlights the importance of purity in thought and intention, not just in action.

The New Testament also addresses the issue of forgiveness and redemption for adulterers. In John 8:3-11, the account of the woman caught in adultery illustrates Jesus' compassion and call to repentance. When the Pharisees bring the woman to Jesus, seeking to stone her according to the Law of Moses, Jesus responds, "Let him who is without sin among you be the first to cast a stone at her" (John 8:7). After her accusers leave, Jesus tells the woman, "Neither do I condemn you. Go and sin no more" (John 8:11). This passage underscores the possibility of forgiveness and transformation through Christ.

Adulterers in the Early Church
The early church continued to uphold the teachings of Jesus regarding adultery. The Apostle Paul, in his letters, frequently admonishes believers to avoid sexual immorality, including adultery. In 1 Corinthians 6:9-10 , Paul warns, "Do you not know that the wicked will not inherit the kingdom of God? Do not be deceived: Neither the sexually immoral, nor idolaters, nor adulterers, nor men who submit to or perform homosexual acts... will inherit the kingdom of God."

Paul also emphasizes the transformative power of the Gospel, reminding believers that they have been washed, sanctified, and justified in the name of the Lord Jesus Christ (1 Corinthians 6:11). This transformation calls for a life of holiness and fidelity.

Moral and Spiritual Implications
Adultery is not only a violation of the marital bond but also a sin against God. It disrupts the divine order of family and community, leading to broken relationships and spiritual harm. The Bible calls believers to uphold the sanctity of marriage and to live lives marked by faithfulness and integrity.

The teachings on adultery serve as a reminder of the need for repentance, the possibility of forgiveness, and the call to live a life that honors God. Through the power of the Holy Spirit, believers are empowered to resist temptation and to pursue righteousness in all aspects of life.