The Whole Truth So Help Me God
Many religious people are unfriendly toward any kind of doctrinal teaching, stating that religion should be based on feeling and good will. The scriptures put major emphasis on teaching the truth, and a large part of truth is doctrine.
John 8:32 And ye shall know the truth, and the truth shall make you free.
Regardless of your denomination or non-denomination, if you truly want to know the truth, read God's Word from Genesis to Revelation, asking The Lord to reveal the truth. He will. You may come across scripture you never heard from the pulpit.
2 Timothy 3:16,17 All scripture is given by inspiration of God and is profitable for doctrine, for reproof, for correction, for instruction in righteousness: That the man of God may be perfect, throughly furnished unto all good works.