Thats how we compare scripture with scripture, spiritual things with spiritual things, by investigating different contexts. 1 Cor 2:13
13 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.
The Holy Ghost is the author of all scripture, both old and new test. Why you think the Apostles used old test scripture all the time ? Its not the same circumstances, but its the same Holy Spirit. So the problem is, when you run up against someone proficient in the scripture, you cry, context context, its just an excuse to reject the truth