So...IOW:
"land" = Creation
"heaven" = All things pertaining to God and His Kingdom
Still quoting N.T. Wright:
What I mean by ‘creation and covenant’ will become clear if we consider a couple of Psalms where the two are joined together. What I intend by using that pair of evocative terms as an initial way in to Paul will then become clear if we consider three central passages in which the same themes play the same kind of roles. This will open the way to a more detailed consideration of what, I shall argue, must be regarded as part of the fundamental structure of his thought, and how it relates to the other themes which will occupy us in subsequent chapters.
The first Psalm is no. 19, a spectacular poem made more so by Joseph Haydn: ‘The heavens are telling the glory of God’. But Haydn’s setting, which never got beyond verse 1, can actually distract us from what the writer is doing. The psalm isn’t just a poem about the glory of creation. It divides into two more or less equal halves (vv. 1–6 and 7–14), and it is the juxtaposition of these which opens the door to the view of creation and covenant which, I shall suggest, remains at the heart of Judaism and, as I shall argue, was always central for Paul.
The first six verses are a paean of praise to God for his creation, celebrating the fact that creation itself praises God and declares his glory without speech or language but yet with great power and force. ‘Their sound has gone out into all the world, and their words to the ends of the earth.’ Within this, the psalmist celebrates the power and strength of the sun. ‘Nothing is hidden,’ he declares, ‘from its searching heat.’ Then, without warning, he switches to the second half of the poem, which is a similar paean of praise for Torah, the Law of YHWH. Torah does in human life what the sun does within creation: it brings the light, power and searching, probing heat of YHWH’s presence into the depths of the human heart. Torah is, of course, the covenant charter of Israel, the Law given to bind Israel to YHWH, to establish the nation as his people. With Torah as its guide, Israel is the unique, chosen people of the one creator God.
First, the covenant is there to solve the problems within creation. God called Abraham to solve the problem of evil, the problem of Adam, the problem of the world. (That, incidentally, is why accounts of the problem of evil which fail to incorporate covenant theology are doomed before they start; but that is another story.) Israel’s calling is to hold fast by the covenant. Through Israel, God will address and solve the problems of the world, bringing justice and salvation to the ends of the earth – though quite how this will happen remains, even in Isaiah, more than a little mysterious.
But, second, creation is invoked to solve the problems within the covenant. When Israel is in trouble, and the covenant promises themselves seem to have come crashing to the ground, the people cry to the covenant God precisely as the creator. Israel goes back to Genesis 1, and to the story of the Exodus, in order to pray and trust that YHWH will do again what, as creator, he has the power and the right to do, and what as the covenant God he has the responsibility to do, namely, to establish justice in the world and, more especially, to vindicate his people when they cry to him for help. In both cases, we should note carefully, it is assumed that something has gone badly wrong. Something is deeply amiss with creation, and within that with humankind itself, something to which the covenant with Israel is the answer. Something is deeply amiss with the covenant, whether Israel’s sins on the one hand or Gentile oppression on the other, or perhaps both – and to this the answer is a re-invoking of creation, or rather of God as creator. ~
Creation and Covenant