Christians believe in God because of God

I am already comfortable writing “2024” down as part of the date when I have to date something; usually it will take longer before I no longer have to think about what year it is, or have to make a correction because I forgot that it is a new year. This time around, it has been the other way around: I found myself tempted to write “2024” already in December. I have no idea why that is. But then, there are so many things I do that I am not sure why I do.
When it comes to why I believe not only in the existence of God, but also in His Truth, as Holy Scripture teaches it, so that I am Christian, and Lutheran, well, that I do know; even though I do wonder why, at times, when I forget that I already know why. Many Christians do; wonder, that is.