The above heading is a misnomer. It is impossible for two people to understand anything and not understand it alike. We understand facts alike; we understand commands alike. It is possible to misunderstand a fact or a command, but our differences arise from our misunderstanding and not from our understanding!
There is a divine and inspired rule running all through the Bible that should be our guide in matters of religion. In Deuteronomy 29:29 we read, "The secret things belong unto the Lord our God; but those things which are revealed belong unto us and to our children forever, that we may do all the words of this law." Secret things belong to God; revealed things belong to us. Too many want to pry into the secret things, or to speak where the Bible does not speak, while they may have very little interest in the plainly revealed truths in God's word. Such is the perversity of human nature.
In 2Timothy 4:1, 2 we read where Paul charged Timothy to preach the Word. Timothy was not at liberty to speculate on the Word of God, but to preach it. We are not to preach our opinions, but the Word. We need to spend more time preaching the Word and not so much time preaching about the Word. "If any man speak, let him speak as the oracles of God" (1Peter 4:11). All religious people are willing to wear the name "Christian". We do not divide over this name. We understand this name alike. Where does the division arise? It comes from introducing religious ideas foreign to, and unknown to, the Bible.
Heaven belongs to the Lord Jesus Christ, and all who get there will have done things in this life His way, and not their own. In John 12:48 Jesus Said "He that rejecteth me, and receiveth not my words, hath one that judgeth him: the word that I have spoken, the same shall judge him in the last day." John 12:49 For I have not spoken of myself; but the Father which sent me, he gave me a commandment, what I should say, and what I should speak. - By R. C. Spears.