The Greek verb eggrapho means to write in, inscribe, or record in a document or medium. The prefix en- (in) combines with grapho (to write) to emphasize the writing of something into a surface — tablets, scrolls, or hearts.
The theology of being 'written in' carries immense weight in Scripture. Moses asks God to blot his name from God's book rather than see Israel destroyed — and God says He will only blot out the names of the sinners (Exodus 32:32–33). Jesus tells the seventy-two disciples to rejoice not that spirits submit to them but that their names are 'written in heaven' (Luke 10:20). Paul uses eggrapho in 2 Corinthians 3:3 to describe believers as 'a letter from Christ... written not with ink but with the Spirit of the living God, not on tablets of stone but on tablets of human hearts.' The greatest inscription is the law written not on stone but within the renewed heart.