It's called "Rightly dividing the word of truth"
2 Timothy 2:15 KJV
Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth.
Paul says we are to compare spiritual things with spiritual...
1 Corinthians 2:13 KJV
Which things also we speak, not in the words which man's wisdom teacheth, but which the Holy Ghost teacheth; comparing spiritual things with spiritual.
So your idea of "Cherry picking the bible" is absolutely nonsence... Otherwise no one would be able to teach from it, but we are reminded that we can use the scriptures to teach.