Mormon’s ultimate definition of “good things” is the gospel’s benefits as available through the Savior’s atonement, so he must tie the good things of Yahweh to these blessings that come through the Atoning Messiah. That is why he spells out that Yahweh is the author of the plan, the being who knows all things from the beginning. This foreknowledge allowed Yahweh-Messiah to redeem humankind. The atonement is the very thing that human beings need to enable them to lay hold on every good thing. Those “good things” are available to us though the Messiah’s atonement.