Non-denominational?
Deuteronomy 4:2
There is only God's Word!
What did Jesus say about the leaders of His own People?
Matthew 15:8 This people draweth nigh unto me with their mouth, and honoureth me with their lips; but their heart is far from me. 9 But in vain they do worship me, teaching for doctrines the commandments of men.
Matthew 23:13 But woe unto you, scribes and Pharisees, hypocrites! for ye shut up the kingdom of heaven against men: for ye neither go in yourselves, neither suffer ye them that are entering to go in.
Matthew 23:15 Woe unto you, scribes and Pharisees, hypocrites! for ye compass sea and land to make one proselyte, and when he is made, ye make him twofold more the child of hell than yourselves.
Look at what Paul said:
Romans 16:17 Now I beseech you, brethren, mark them which cause divisions and offences contrary to the doctrine which ye have learned; and avoid them.
Ephesians 4:13 Till we all come in the unity of the faith, and of the knowledge of the Son of God, unto a perfect man, unto the measure of the stature of the fulness of Christ:
Philippians 1:15 Some indeed preach Christ even of envy and strife; and some also of good will: 16 The one preach Christ of contention, not sincerely, supposing to add affliction to my bonds: 17 But the other of love, knowing that I am set for the defence of the gospel. 18 What then? notwithstanding, every way, whether in pretence, or in truth, Christ is preached; and I therein do rejoice, yea, and will rejoice.
Philippians 2:21 For all seek their own, not the things which are Jesus Christ's.