"There is a way that seemeth right unto a man, but the end thereof are the ways of death." Proverbs 16:25. Ignorance is no excuse for error or sin, when there is every opportunity to know the will of God. A man is traveling and comes to a place where there are several roads and a guideboard indicating where each one leads. If he disregards the guideboard, and takes whichever road seems to him to be right, he may be ever so sincere, but will in all probability find himself on the wrong road.
God has given us His word that we may become acquainted with its teachings and know for ourselves what He requires of us. When the lawyer came to Jesus with the inquiry, "What shall I do to inherit eternal life?" the Saviour referred him to the Scriptures, saying: "What is written in the law? how readest thou?" Ignorance will not excuse young or old, nor release them from the punishment due for the transgression of God's law; because there is in their hands a faithful presentation of that law and of its principles and claims. It is not enough to have good intentions; it is not enough to do what a man thinks is right or what the minister tells him is right. His soul's salvation is at stake, and he should search the Scriptures for himself. However strong may be his convictions, however confident he may be that the minister knows what is truth, this is not his foundation. He has a chart pointing out every waymark on the heavenward journey, and he ought not to guess at anything.
It is the first and highest duty of every rational being to learn from the Scriptures what is truth, and then to walk in the light and encourage others to follow his example. We should day by day study the Bible diligently, weighing every thought and comparing scripture with scripture. With divine help we are to form our opinions for ourselves as we are to answer for ourselves before God."
The Great Controversy p. 598, by Ellen G. White