“I asked why would a loving and all powerful and all knowing God want or need to “blind the minds of unbelievers”…what does this mean to believers about non-believers?”
It is not meant that all should have eyes to see and ears to here with understanding the Word of God. The reason for this is many just do not have the strength to stand against Satan when he arrives, and if they knew the truth and bowed to him, they would have committed the unforgivable sin. It is God that sends the spirit of slumber on them for their own protection.
Romans 11:7 “What then? Israel hath not obtained that which he seeketh for; but the election hath obtained it, and the rest were blinded”
Romans 11:8 “(According as it is written, “God hath given them the spirit of slumber, eyes that they should not see, and ears that they should not hear” unto this day.”
Romans 11:9 “And David saith, “Let their table be made a snare, and a trap, and a stumblingblock, and a recompence unto them:”
Romans 11:10 “Let their eyes be darkened, that they may not see, and bow don their back alway.”
Those that have this spirit of slumber placed upon themselves will not be judged to death for their acts in ignorance in the flesh, but in God’s appointed time, in the Millennium age, they shall be taught discipline and judged by their works in that age. In the manuscripts God has prepared His elect, by showing those that can see and have the ears to hear, to see beyond that veil of truth that He sets you at liberty. This is possible because the Holy Spirit is the one that lifts that veil, and shines the light of truth into their mind, and gives you understanding.
However, for many there is just no way that they can see beyond that veil and into the things that are spiritual because they are blinded by the Satan the god of this world, which is to say the prince of the power of the air.
II Corinthians 4:5 “For we preach not ourselves, but Christ Jesus the Lord; and ourselves your servants for Jesus’ sake.”
Paul didn’t come to Corinth and representing himself, or any denomination or person, but Paul came to the Corinthians preaching Jesus Christ our Lord and Savior. Paul preached a risen Christ, the Son of God born in the flesh, living a perfect live in the flesh, and crucified at the hands of the Kenite leaders. Paul never represented any division in the many membered body of Jesus Christ, but we came to you as your slaves in the service of Christ, for Jesus’ sake.
When you teach Jesus Christ and Christ only, then you become the servants of everyone for Jesus’ sake. When there is divisions or denominations, then your loyalty is to those man made divisions and the rules that he set, rather than to Christ’s teachings only. When you commit to a method of teaching, and set the limits of what shall and shall not be taught in your church house, then you limit God and allow a man to control you. Paul came to Corinth free from all ties and teaching the entire Word of God; chapter by chapter and verse by verse; line upon line and precept upon precept. The entire Word of God is the entire plan of God and man does not set the limits on God’s Word. True Christianity brings you above denominationalism and sets you free of that stuff. Though many of them try to do a good job, you need to mature into the deeper thoughts of the Word of God, and get above the childish things. That is not an insult, but a fact.