Isaiah 18:7 shows the result of God's quiet observation in 18:4: tribute from Cush brought to Zion.

Isaiah 26:21 depicts God leaving his dwelling to punish — contrasting with his quiet observation from his dwelling in 18:4.

Isaiah 12:6 celebrates God's presence in Zion — the same dwelling from which he quietly observes in 18:4.

Isaiah 14:32 declares Zion as God's foundation and refuge — the same dwelling place from which he watches in 18:4.

Isaiah 31:9 describes God's fiery presence in Zion — the same place he quietly observes from in 18:4.

Isaiah 46:13 promises salvation in Zion — the ultimate purpose behind God's quiet waiting in 18:4.

Psalm 132:14 echoes God's 'rest' in 18:4, declaring Zion as his eternal resting place.

Hosea 14:5 directly says 'I will be as the dew unto Israel', strongly echoing the dew metaphor here.

Zephaniah 3:17 says God 'will rest in his love', directly mirroring the 'take my rest' language here.

Hosea 5:15 describes God returning to his place to wait for repentance — similar to God waiting quietly in his dwelling in 18:4.

Joel 3:21 affirms the LORD dwells in Zion — the same dwelling place from which he observes in 18:4.