The Gita needs to be revered at all times. It represents the vast expanse of all Vedic teachings condensed into 700 verses that have fathomed the length and breath of life, as a process. Many times, because of prior influence of other good scriptures, a person may tend to compare the Gita with them and may unknowingly misinterpret or miscalculate the deeper intentions of the Gita. It becomes vital for a man of intelligence to deliberate on the Gita more deeply, with a purified mind before jumping to conclusions.
Sanatana Dharma is vast as the blue ocean. You cannot measure its extent, neither can you fathom its depth. It defines the whole of the universe within its fold. A person who understand Sanatana Dharma, the one who has realized Sanatana Dharma, becomes immortal. For him, there remains no unfinished duties.