Adam, the first man, was created on the sixth day of dust from the ground (Genesis 2:7). Eve, his helper (Genesis 2:18), was created from one of Adam's ribs (Genesis 2:21). Adam and Eve were the first human beings to walk on this planet. All humans are descendants of Adam; God did not create other humans alongside of Adam and Eve to help them populate the earth. In the book of Acts, the apostle Paul explains to the men of Athens that God made from one man every nation of mankind to live on all the face of the earth (Acts 17:26).
Once again, those who believe God created the world in six symbolic days are faced with a problem. Denying the truthfulness of the historical account found in Genesis 1 affects the very foundations of the gospel. Theistic evolution must deny the historical figures of Adam and Eve and replace them with the first two beings evolved far enough to be deemed human. Not only does this invalidate Scripture's clear description of the creation of Eve, but it also means that there was death before the fall. But according to Scripture, there was no death before the fall, all were vegetarians (Genesis 1:29-30). Death is the penalty for sin.
A symbolic view of the days of creation also contradicts other passages in Scripture. In addition to Paul's explanation that all men are descendants of Adam (Acts 17:26), Paul viewed Adam as just as historical of a figure as Moses (Romans 5:14) and Jesus Christ (Romans 5:15). The evil of sin relates directly to the gospel. For as in Adam all die, so also in Christ all will be made alive (1 Corinthians 15:22). Because of Adam, we are all by nature children of wrath (Ephesians 2:3). Adam is the "first Adam," but Christ is the "second Adam" (1 Corinthians 15:45). The genealogies in Scripture trace from Adam's genealogy directly to Christ's (see Luke 3:23-38). Also, the book of Jude leaves no room for a symbolic Adam, stating that Enoch lived in the seventh generation from Adam (Jude 1:14). Jesus Himself quotes from Genesis in Matthew 19, stating that God who created them from the beginning made them male and female (Matthew 19:4).
The fall of Adam affects everyone because all humans are descendants of Adam, thus the gospel is needed. Acceptance of evolutionary philosophies allows for no clear start to humanity, therefore it must alter the reason for the current sinful state of humanity. Even more, it makes Christ and numerous other writers of Scripture liars for referring to the account of creation in "literal terms".