"Adam didn’t die the day God said he would!"
He certainly did. He died spiritually. The moment he sinned, he became "dead in trespasses and sins" (Ephesians 2:1). Ezekiel 18:4 says, "The soul that sins, it shall die." It is because we are born spiritually dead that Jesus came to give us spiritual life (John 5:40; 10:10; 14:6; etc.). This is why Jesus told us that we must be born again (John 3:3). When we repent of our sins and believe in Jesus Christ, the Bible tells us that we "pass from death to life" (John 5:24; Romans 6:13; 1 John 3:14). "We are born dead in trespasses and sins, alienated, cut off, detached from the life of God. The day that man believed the devil’s lie (which is sin), he forfeited the life that distinguished him from the animal kingdom—the life of God. When sin came in, the life went out." Ian Thomas