@Monkey D Theories @Jew D. Boy @NikaInParis @AL sama you guys may be interested in this
I may be wrong but I think the law\grace part is
1: Law: the time from Moses to Jesus, includes Jesus' time on earth
2: Law\Grace: the time of the book of Acts, which happens after the gospels, a transition between a focus exclusively on the jewsih nation, towards the gentiles
3: Grace: worldwide focus