Bible Summary. Deuteronomy 22:22 defines adultery as “…lying with a woman married to an husband…”. Adultery is an unfaithful act committed against a marriage partner. One of the Ten Commandments is "Do not commit adultery". From God's perspective, adultery is a work of the flesh and it is as bad as committing heresies and even murder. God considers adultery and infidelity in marriage as an unrighteous act. Adultery starts in a person's heart and is a willful act no matter who is the tempter and who is tempted. See below for more commentary and scriptures that define adultery.
The basic definition of adultery is from Deuteronomy 22:22. Adultery is “…lying with a woman married to an husband…” Adultery is defined as a married person has sex with someone outside the marriage. God considers adultery a sin and it is one of the ten commandments.
See Scripture Commentary: Deuteronomy 22:22 advises us that adultery is evil.
Adultery is a Sin.
Adultery is an unrighteous act. In no circumstances can it please God when a person commits adultery. Adultery starts where a person lusts for someone that is not their spouse. God is not pleased when a person covets someone outside of marriage. This is a slippery slope that will lead to adultery.
See Scripture Commentary: 2 Peter 2:14 advises us of the sinful and beguiling nature of adultery.
Adultery Comes From Within Our Own Heart.
Adultery is committed by two willing partners. One person in the relationship may have been the temptress or tempter, but the other person accepted the temptation. When we have lust in our eyes for a person who is married to another, God considers us adulterers.
See Scripture Commentary: Matthew 5:28 advises us that adultery starts in our hearts.
Adultery is a Work of the Flesh.
Most societies do not consider adultery a crime. Things like littering and illegal parking are a crime, but not adultery. On the other hand, the Bible categorizes adultery with murder, heresies, and other works of the flesh.
See Scripture Commentary: Galatians 5:19 defines adultery as a work of the flesh.