The Call to the Believers in the Qur'an

Whenever I read the Qur'an, the sound of the Call from my Lord would penetrate my heart, with His saying: "O you who believe!" -Shaykh Ahmad Fathu'llah Jami
When we hear the verses calling the believers in the Qur'an, "O you who believe", does it truly penetrate our heart? In His Wisdom, Allah, subhanahu wa ta'ala speaks directly to the community of the believers throughout the Qur'an with this call. Imam Zaid Shakir covers several of these verses, contemplating on the significance these verses must have in our life.
Part 1a: Surah Baqara: Verse 208