(Gen 6:1-4) Disprove: Angels married women and engendered a race of giants.

1. This scripture does not say that angels married women. It states that the sons of God “took them wives of all which they chose” (verse 2). These sons of God were not angels. The fact is that angels cannot marry - it is impossible for them to marry. Jesus said those in the resurrection “neither marry nor are given in marriage" but are as the angels (Matt. 22:30 and Mark 12:25).
    
2. Angels cannot cohabitate with women and reproduce sexually. Angels are spirit beings (Heb. 1:14). Women are human beings. Here we have two different kinds. God established a law that each kind produces only after its own kind (Gen. 1:11, 12, 21). This is made clear by the context as well. In Genesis 6:3-4 God states, “My spirit will not always strive with man.” God is speaking of mankind, not angels. Verse 4 shows that the children of the sons of God and the daughters of men were “mighty men” not angels.
    
3. In the Bible the phrase “sons of God” has three different meanings. One refers to spirit - begotten Christians (Rom. 8:14; I John 3:2). Also, angels are called “sons of God” (Job 1:6; 38:4-7). But remember angels “neither marry nor are given in marriage.” The third meaning refers to mankind in general because all men are sons of God by creation (Psa. 82:6, Mal. 2:10, Luke 3:38). Since these were obviously not spirit-begotten Christians, and could not be angels, it is evident that these “sons of God” were simply mankind in general who had forsaken God and were intermarrying in defiance of His law.
    
4. One final clarification - giants were not exclusively the progeny of the sons of God and the daughters of men. Verse 4 shows that the giants existed before the sons of God married the daughters of women and afterwards, but does not state that they were the results of these marriages