People say such strange things in discussing religion. One of the strangest expressions one will hear is, "It really doesn't make much difference." Now, where else would one hear such an expression about a very serious matter? How would you react if your physician should say, "It really doesn't make any difference what kind of medicine I give your sick child." Or who ever heard an attorney say, "It doesn't make any difference what kind of will I draw up for you. A will is a will." Such nonsense is never heard, except in religion.
Paul taught that there is a difference between the law of Moses and the law of Christ, and he wrote a portion of Romans, 2 Corinthians, Galatians and Hebrews to prove it.
If it doesn't make any difference, then there is no difference between Christ's church and Satan's church; between the church the Lord bought with His own blood (Acts 20:28) and the churches founded by men and based on human creeds.
If it doesn't make any difference, then one may preach the doctrines of men or of demons with the same confidence as he would preach the gospel of Christ.
If it doesn't make any difference, one may disregard what the gospel of Christ says and substitute for it the opinions of fallible men.
If it doesn't make any difference, one may "pervert" the gospel, "corrupt" it, handle it "deceitfully", and "wrest" it with God's approval.
If it doesn't make any difference, one may worship as he pleases, where he pleases, whom he pleases, and when he pleases; or if he chooses, worship not at all.
If it doesn't make any difference, one may be a believer or an unbeliever, a Christian or an atheist, a saint or a sinner, and retain the same confident hope of heaven.
Do you honestly believe that it makes no difference what one believes and practices in things that pertain to one's eternal welfare?