Use it offline. Keep your integrity online. And if you do use it, never pretend you found those 64 diamonds "legitimately."
The 1.12.2 X-Ray Texture Pack is a custom texture pack designed for Minecraft, a popular sandbox video game. The pack is specifically created for Minecraft version 1.12.2, which was released in 2017. 1.12.2 x ray texture pack
Some packs in 1.12.2 rely on Optifine. Download and install Optifine 1.12.2 HD U E5 (or similar version). Optifine allows you to turn on "Connected Textures" and better lighting control, which fixes the darkness issues in X-Ray packs. Use it offline
1.12.2 is a modding paradise. If you want a less cheaty experience, consider mods like: The pack is specifically created for Minecraft version 1
This article breaks down everything you need to know about X-Ray texture packs for version 1.12.2.