Unfortunately no English translation is infallible. However, some recommended versions of these scriptures include:

• Tanakh: Jewish Publication Society
  
• Bhagavad-Gita: Swami Sivananda, Divine Life Society
  
• Al-Risalah: Principles of Sufism, Kazi Publications
  
• Revelation of the Mystery, Pir Publications
  
• Blue Letter Bible (Online)
  
• The Way of the Bodhisattva, Shambala
  

Some of these have the original texts, which is important when cross referencing where the translations came from or what they mean.