My experience with most theists I have met is that they make the statement that their God exist as a statement of fact. They don't base this statement on what we as atheists would consider valid evidence but rather on faith (subjective evidence). As far as providing evidence to a non believing atheist who is expecting empirical or objective evidence I believe that this is impossible. When I was a theist I believed that a relationship with god was a personal matter and choice on behalf of the believer.
In fact in the bible it says that even Jesus according to the author of Luke in chapter 9:2,5 stated
2.And he sent them to preach the kingdom of God, and to heal the sick.
5.And whosoever will not receive you, when ye go out of that city, shake off the very dust from your feet for a testimony against them.
As a Christian your duty was to simply preach the gospel and if the person accepts it fine and if he/she doesn't then fine, you have done your job by simply presenting them with the Word. The bible does not tell you to get into theological arguments and discussions of science and of presenting evidence these are all things that were added on later as an answer to philosophy and science. They were meant to respond to the changes of a new world.
Titus 3:9,10
9.But avoid foolish questions, and genealogies, and contentions, and strivings about the law; for they are unprofitable and vain.
10.A man that is an heretick after the first and second admonition reject;
In fact in the bible it says that even Jesus according to the author of Luke in chapter 9:2,5 stated
2.And he sent them to preach the kingdom of God, and to heal the sick.
5.And whosoever will not receive you, when ye go out of that city, shake off the very dust from your feet for a testimony against them.
As a Christian your duty was to simply preach the gospel and if the person accepts it fine and if he/she doesn't then fine, you have done your job by simply presenting them with the Word. The bible does not tell you to get into theological arguments and discussions of science and of presenting evidence these are all things that were added on later as an answer to philosophy and science. They were meant to respond to the changes of a new world.
Titus 3:9,10
9.But avoid foolish questions, and genealogies, and contentions, and strivings about the law; for they are unprofitable and vain.
10.A man that is an heretick after the first and second admonition reject;
There is nothing people will not maintain when they are slaves to superstition
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