<<one who denies God exists>>
This is a person who doesn’t believe in the existence of God and is firmly convinced of that view. This is different to an agnostic who doesn’t know whether God exists or not. “The fool says in his heart, ‘There is no God’’’ (Ps 14:1, 53:1). Atheism elevates man to the category of God, by putting man in the center, yet this unbelieving stance does not have the power to change lives or bring peace and joy for it provides no basis for morality, no hope, and no meaning for life.
Check the facts!
disproving one particular facet of a belief system doesn't necessarily mean the whole is wrong. With integrity a person can't say they have considered the message of Christianity unless they actually have investigated its claims for themselves. Jesus offered three lines of independent evidence for His hearers to trust Him: human testimony (John the baptiser), observations (His works), and written records (the OT Scriptures) – yet they refused to consider this compelling proof (Jn 5:31-40). These listeners were locked into their own closed mental position and would not realistically even consider the facts and come to faith in Christ. The consequences for all unbelievers is eternal damnation (Jn 3:36). Desire to seek and know the truth – Jesus claimed He is "The way, the truth and the life and no one comes to God except through Him" (Jn 14:6).