Several facets of Israel's national life, all evidences of self-sufficiency rather than trust in Yahweh, invited judgment (cf. Mic. 5:10-14).
2:6 Israel must walk in Yahweh's light because God had forsaken her in her present condition for departing from Him. Contrast the nations that will seek the Lord in the future (v. 2). Israel had stopped living as a distinct people in the world, had adopted the ways of other nations, and had relied on them rather than on the Lord. She had looked to the East (Assyria and Babylonia) for light rather than to the Lord and had become like her despised enemies, the uncircumcised Philistines.
2:7-8 Specifically, Israel had filled herself with the wealth, armaments, and idols of the pagan nations (cf. Deut. 17:16-17; 1 Kings 10:26-11:8). King Uzziah's successful reign brought material prosperity to Judah, but this wealth had only encouraged Jewish materialism and neglect of God. Judah had accumulated these things to make herself secure, but she was only trusting in what she herself had made. Contrast the nations that will seek spiritual benefits (v. 3), enjoy peace (v. 4), and follow the Lord (v. 4).
2:9 Glorifying created things rather than the Creator results in the humiliation and abasement of those who do these things. Forgiveness is unthinkable when people do these things (v. 9; cf. Exod. 34:7).38