Biblical Evidence that Contraception is Immoral

• Gen 1:28, 9:1,7; 35:11 - the Lord commands us to be fruitful ("fertile") and multiply. We cooperate with the Creator's love.
• Gen. 28:3 - Isaac's prayer over Jacob shows that fertility and procreation are considered blessings from God.
• Gen. 38:8-10 - Onan is killed by God for practicing contraception (withdrawal) and spilling his semen on the ground.
• Gen. 38:11-26 - Judah (like Onan) also rejected God's command to keep up the family lineage, but he was not killed.
• Deut. 25:7-10 - penalty for refusing to keep up lineage is not death, like Onan received. Onan was killed for wasting seed.
• Gen. 38:9 - also, the usage of the graphic word "seed," uncharacteristic for Hebrew writing, highlights the reason for death.
• Exodus 23:25-26; Deut. 7:13-14 - God promises blessings which include no miscarriages or barrenness. The family reflects the Blessed Trinity.
• Lev.18:22-23;20:13 - wasting seed with non-generative sexual acts warrants death. Many Protestant churches reject this teaching.
• Lev. 21:17,20 - crushed testicles are called a defect and a blemish before God. Deliberate sterilization is intrinsically evil.
• Deut. 23:1 - whoever has crushed testicles or is castrated cannot enter the assembly. Contraception is objectively sinful.
• Deut. 25:11-12 - punishment for potential damage to testicles. Hence, vasectomies are gravely contrary to the natural law.
• 1 Chron. 25:5 - God exalts His people by blessing with many children. Contraception = not your will God, but my will be done.
• Psalm 127:3-5 - children are a gift of favor from God and blessed is a full quiver. We must be open to God's gift of life.
• Hosea 9:11; Jer. 18:21 - God punishes Israel by preventing pregnancy. Contraception is a curse.
• Mal. 2:14 - Marriage is not a contract. It is a covenant - a supernatural exchange of persons with children as the fruit of the union.
• Mal. 2:15 - What does God desire? Godly offspring. Contraception = God may want an eternal being created, but I say no.
• Matt. 19:5-6 - Jesus said a husband and wife shall become one. They are no longer two, but one, as God is three persons, yet one.
• Matt. 19:6; Eph. 5:31 - contraception prevents God's ability to "join" together. God's love for the Church is selfless and sacrificial.
• Acts 5:1-11 - Ananias and Sapphira were slain because they withheld part of a gift. Fertility is a gift from God and cannot be withheld.
• Rom.1:26-27 - sexual acts without the possibility of procreation is sinful. Self-giving love is life-giving love.
• 1 Cor. 6:19-20 - the body is the temple of the Holy Spirit; thus, we must glorify God in our bodies.
• 1 Cor. 7:5 - natural family planning (NFP). Do not refuse each other except perhaps by agreement for a season, naturally.
• Gal. 6:7-8 - God is not mocked for what a man sows. If to the flesh, corruption. If to the Spirit, eternal life.
• Eph. 5:25 - husbands love your wives as Christ loved the Church - by giving his entire body and holding nothing back.
• Eph. 5:29-31; Phil. 3:2 - mutilating the flesh (e.g. surgery to prevent conception) is sinful. Some Protestant churches reject this teaching.
• 1 Tim. 2:15 - childbearing is considered a "work" through which women may be saved by God's grace.
• Rev. 9:21; 21:8; 22:15; Gal. 5:20- sorcery = "pharmakeia" = includes abortifacient potions such as birth control pills = mortally sinful.

(Source: www.scripturecatholic.com)