Of course. You’ve been a Christian for 50 years. You really cannot question it now, I wouldn’t even advise it.
A very gracious and lady-like response to my somewhat snide quip!
Sometime between the ages of 6 and ten, after either falling out of a tree or off of a wall, I concluded that the things I had been taught concerning gravity were true and relevant to my life. Therefore, I incorporated Gravity and its effects into all subsequent life calculations. This decision has served me well in the ensuing years.
In a similar vein, in 1968 as an enlisted Marine on my way to Vietnam, I thought, "I'm an enlisted infantry Marine on my way into combat carrying a field radio (read - Big Target). Time to questioned myself".
Do I really believe all that I have been taught regarding Life and Eternity?
Is the evidence comprehensive and has it been vetted by people of integrity whom I know & trust?
Have I seen, in my own life, both subjective and objective evidence that God does exist, that the historical claims of Jesus Christ are true and applicable to me.
My answers were, of course, "YES!"
The former Pharisee and Sanhedrin bounty hunter, Saul of Tarsus, later known as St. Paul, does an excellent summation with which I wholeheartedly agree.
"31 What, then, shall we say in response to these things? If God is for us, who can be against us? 32 He who did not spare his own Son, but gave him up for us all—how will he not also, along with him, graciously give us all things? 33 Who will bring any charge against those whom God has chosen? It is God who justifies. 34 Who then is the one who condemns? No one. Christ Jesus who died—more than that, who was raised to life—is at the right hand of God and is also interceding for us. 35 Who shall separate us from the love of Christ? Shall trouble or hardship or persecution or famine or nakedness or danger or sword? 36 As it is written:
“For your sake we face death all day long; we are considered as sheep to be slaughtered.”
37 No, in all these things we are more than conquerors through him who loved us. 38 For I am convinced that neither death nor life, neither angels nor demons, neither the present nor the future, nor any powers, 39 neither height nor depth, nor anything else in all creation, will be able to separate us from the love of God that is in Christ Jesus our Lord." Romans 8:31-39
You have identified yourself as an "atheist". If you were still at the "Agnostic" (from the Greek - ágnotos "not known") stage I would recommend to you: