You will forget 80% of what you don't write down.

The Greek phrase for “stand firm” implies stability, firmness, and strong devotion to something. The Corinthians of old and modern Christians are encouraged to remain committed to Christ and devoted to Him. Several metaphors come into play here. One can think of a tree standing firm against a strong wind, soldiers holding down a fort, or a spouse supporting an ailing partner. To stand fast is to be loyal, faithful, devoted, and unmoving.
When the fight and the enemy is spiritual - how do you stand firm?