Responding to the whole revelation appropriately and with right timing.
We have the whole revelation, the Bible, the questions are timing and application. We must respond as the 2nd and 3rd parts of Psalm 1:1 do, taking the spirit of the first part, and applying it rightly, with right timing, to those new situations God puts us into, for our maturity.
Example: With the death and resurrection of Israel in the desert (only 2 made it to the Promised Land) the decalogue was appropriately modified, keeping the spirit. How so? Sabbath because I brought you out of Egypt, not creation. Live long and prosper, for the Levites would have no land. And wife before the house, not as part of the house.
We are to go and do likewise.