Isaiah 5:6 depicts God making the vineyard a wasteland, the opposite of his protective watering here—strong contrast.

Isaiah 55:10 compares God's word to rain that waters the earth—strong parallel to God watering the vineyard here.

Isaiah 58:11 promises the faithful will be like a well-watered garden—direct parallel to God's watering here.

Isaiah 5:1 introduces the vineyard song of the Lord, the same allegory of Israel that is tended and kept in Isaiah 27:3.

In 1 Samuel 2:9, God guards the feet of his faithful ones, directly paralleling the Lord's night-and-day guarding of the vineyard.

In Psalm 121:3-5, God is the keeper who never slumbers, directly echoing the night-and-day guarding of the vineyard.

In Ezekiel 34:11, God as the shepherd seeking his sheep mirrors the Lord as keeper watering and guarding the vineyard.

In John 15:1, Jesus identifies himself as the true vine and the Father as the gardener—directly echoing God's care for the vineyard here.

Psalm 80:8 uses the same vineyard metaphor for Israel, depicting God planting and caring for the vine as in Isaiah 27:3.

Psalm 121:4 declares that God who keeps Israel neither slumbers nor sleeps, echoing the night-and-day watch over the vineyard here.

1 Corinthians 3:9 calls believers God's field (husbandry), carrying forward the agricultural image of God's care seen in the vineyard of Isaiah 27:3.

Genesis 6:17 shows God bringing destruction — contrasting with His preserving care here. Both use 'I, even I' phrasing.