Nothing but an experimental knowledge of God will save the nation.
understandeth - theoretically; in the intellect.
knoweth - practically: so as to walk in My ways (Jer 22:16; Job 22:21; 1Co 1:31).
loving kindness - God’s mercy is put in the first and highest place, because without it we should flee from God in fear and despair.
judgment ... righteousness - loving-kindness towards the godly; judgment towards the ungodly; righteousness the most perfect fairness in all cases [Grotius]. Faithfulness to His promises to preserve the godly, as well as stern execution of judgment on the ungodly, is included in “righteousness.”
in the earth - contrary to the dogma of some philosophers, that God does not interfere in terrestrial concerns (Psa 58:11).
in these ... I delight - as well in doing them as in seeing them done by others (Mic 6:8; Mic 7:18).