'Enlightened' in the Bible

I pray that the perception of your mind may be enlightened so you may know what is the hope of His calling, what are the glorious riches of His inheritance among the saints,

For it is impossible to renew to repentance those who were once enlightened, who tasted the heavenly gift, became companions with the Holy Spirit,

Remember the earlier days when, after you had been enlightened, you endured a hard struggle with sufferings.