The topic of prohibitions concerning marriage and certain foods is addressed in the New Testament, particularly in the context of false teachings and apostasy. The Apostle Paul, in his pastoral epistles, warns against doctrines that deviate from the truth of the Gospel, including those that impose unnecessary restrictions on believers.

1 Timothy 4:1-5
In 1 Timothy 4:1-5, Paul writes to Timothy about the dangers of false teachings that will arise in later times. He states: "Now the Spirit expressly states that in later times some will abandon the faith to follow deceitful spirits and the teachings of demons, influenced by the hypocrisy of liars, whose consciences are seared with a hot iron. They will prohibit marriage and require abstinence from certain foods that God has created to be received with thanksgiving by those who believe and know the truth. For every creation of God is good, and nothing that is received with thanksgiving should be rejected, because it is sanctified by the word of God and prayer" .

This passage highlights two specific prohibitions: marriage and certain foods. Paul identifies these as doctrines of demons, suggesting that such teachings are contrary to the freedom found in Christ. The prohibition of marriage may refer to ascetic practices that view celibacy as a superior spiritual state, while the abstinence from certain foods likely echoes Jewish dietary laws or other ascetic practices that were being imposed on believers.

Marriage
Marriage is instituted by God and is considered honorable among all (Hebrews 13:4). The prohibition of marriage, therefore, contradicts the divine purpose for human relationships and the family unit. In Genesis 2:24, marriage is established as a union between a man and a woman, and throughout Scripture, it is upheld as a covenant relationship that reflects Christ's relationship with the Church (Ephesians 5:31-32).

Foods
Regarding foods, the New Testament affirms the freedom of believers to eat all foods with thanksgiving. Jesus declared all foods clean (Mark 7:19), and Peter's vision in Acts 10:9-16 further reinforces this truth, as God instructs him not to call anything impure that God has made clean. The early church grappled with dietary laws, particularly in relation to Gentile converts, but the Jerusalem Council in Acts 15 concluded that imposing such restrictions was unnecessary for salvation.

Theological Implications
The prohibitions addressed by Paul are indicative of a broader theological error that elevates human traditions and ascetic practices above the grace and liberty found in Christ. Such teachings can lead to legalism, which undermines the sufficiency of Christ's atoning work and the believer's freedom in Him. Paul emphasizes that all of God's creation is good and should be received with gratitude, as it is sanctified by the word of God and prayer.

In summary, the prohibition of marriage and certain foods, as warned against in 1 Timothy, serves as a caution against false teachings that detract from the Gospel's core message of freedom and grace. Believers are encouraged to hold fast to the truth, recognizing that all of God's creation is to be enjoyed with thanksgiving, in accordance with His word.