It sounds like you’re in a really tough spot, feeling both emotionally overwhelmed and disconnected from your partner. His shift toward religious practices, while it might be meaningful for him, seems to be creating a huge emotional distance between the two of you, especially given his behavior.

It’s important to acknowledge that marriage can have its ups and downs, and when someone starts changing in ways that don’t align with what you thought you were building together, it can feel disorienting. The sudden, intense religious focus seems to be adding to the strain, especially when combined with his recent negative behaviors like yelling, accusing you of infidelity, and invading your privacy.

You’re right that prayer, in this context, feels more about him addressing his own guilt or frustrations, rather than offering you real comfort or reconciliation. Instead of seeking your forgiveness or even acknowledging your feelings, it sounds like he's redirecting the situation towards his own moral or spiritual stance, which can be incredibly frustrating and isolating for you.

It’s also understandable that you feel his shift in religious practice is disconnected from reality—when someone radically changes a fundamental aspect of their life (like religion), it can feel jarring, especially when it’s accompanied by other troubling behaviors. It seems like he’s pushing for a certain kind of religious experience that doesn’t match your own, and the imposition of it (especially when it clashes with your lived reality) is putting additional strain on your marriage.

You’ve already communicated how you feel, and if he’s pushing harder, it could mean that he’s either not hearing you or refusing to understand your perspective. The fact that he’s not even willing to meet you halfway—by addressing the core issues of your relationship like his behavior and your feelings—leaves little room for real healing or growth between you.

What you should do:

1. Set boundaries: If his religious practices are making you uncomfortable or are being used as a tool for control or guilt, it’s okay to set limits. Let him know that you’re not opposed to his faith, but you need space for your own perspective and that you need him to respect your views and feelings. The way he’s behaving—forcing religion into everything without listening to you—is not respectful of you as an individual, and setting boundaries is necessary for your emotional well-being.
2. Focus on core issues first: It’s important that the two of you address the behavior that’s really causing the breakdown: his yelling, accusations, and invasion of your privacy. These are major red flags in a relationship, and if they aren’t addressed, the religious differences won’t matter in the long run. Ask for specific changes in his behavior (e.g., no more yelling, no more going through your phone, a commitment to honesty and trust). Once these core issues are addressed, there may be more space to talk about the religion aspect.
3. Seek outside help: Given that you’re already talking about separation, it might be helpful to get counseling—either individually or as a couple. A neutral third party can help both of you navigate your differences, whether they’re related to religion, behavior, or general relationship dynamics.
4. Reflect on your values and needs: You mentioned that you’re Christian too, but that your practices differ. It’s important to reflect on how your partner’s actions are affecting you emotionally and spiritually. If you feel that your values and needs are not being respected, it may be a sign that the relationship is no longer fulfilling or supportive in the ways it should be.

Ultimately, the most important thing is for both of you to feel heard, respected, and supported in the marriage. If his focus on religion is leading to more isolation and pushing you away, that’s something that needs to be addressed with care and honesty. If he’s unwilling to engage in that conversation or change his behavior, then it might be time to reevaluate where this relationship is headed.