Deuteronomy 4:2 (NKJV)
Today most airlines have some fees for any bags you may want to check. This has led to some people trying to carry all of their luggage on to the airplane. In recent years, it has been almost comical as I have seen some people try to bring large bags and other things on to the airplane and then have those people try to fit those things into the overhead storage areas. It makes me think that some people have no comprehension of size and space or of the laws of physics, because there is no way that the stuff they have is going to fit, so the people end up having to check the bag or item anyway.
God has given us His Word to show us who He is, to tell us what Jesus did for us, and to help us in our life. One thing that we see repeated in the Bible is how we should not add to, or take away from, anything that God has said to us. However, some people still try to claim the Bible says things that it never says. People have told me several things that, "the Bible says", that are not really in the Bible. This leads to problems and confusion on the part of the people who have the wrong ideas about what the Bible says, as well as those people who hear them.
Some people try to take their personal beliefs, cultural background, traditions, and other things and add them to the Bible, but we can't fit those things into the Bible. God and His Word do not change and what we believe must always agree with what God has said. If we are just trying to find a way to fit our own ideas into God's Word we are only hurting ourselves and the people around us. We need to know what the Bible says so we can be sure that what we believe about God, who we are in Christ, and how we should live our life are all correct so that we can do what God has said and live the life He has planned for us.