Do you regularly operate a motor vehicle of some kind? If so, is your motor vehicle male or female? This will seem like a nonsensical question to some. Machines don't have a gender! Others might think of their vehicle as male or female. We sometimes hear it in how they talk about their vehicle. But I'd argue that most recognize that this has more to do with them than their vehicles. If pushed, few would insist that their vehicles have a gender. They'd acknowledge that this is how they like to think about them even though they know it isn't accurate.
When it comes to humans, gender takes on far more meaning. Consider the case of Jim. He was born biologically male, and he always identified as a man. Being male felt right to him. He never wondered if he might be a woman or wished that he was one. He didn't question his gender identity because he never had any reason to do so. It might not surprise you to learn that Jim approached his Christian faith in much the same way. He regarded it as an important part of who he was. He didn't question it, at least not seriously, because he never needed to. It felt right, and it worked for him.