Isaiah 28:9
Whom shall he teach knowledge? and whom shall he make to understand doctrine? them that are weaned from the milk, and drawn from the breasts.
Cross-reference
Isa 53:1 asks 'who has believed our report?' — the same rhetorical lament about unbelief in God's message, deepening the theme of rejection.
Isaiah 30:10-12 shows people rejecting true prophecy for smooth words, matching this picture of unwillingness to be taught.
Ps 131:2 uses the identical weaned child image for humility and trust, reinforcing the metaphor of readiness in Isaiah.
Jeremiah 6:10 uses the very same rhetorical question — 'To whom shall I speak?' — about people's inability to hear.
Mark 10:15 demands receiving the kingdom like a child — the same childlike receptivity that Isaiah's weaned child represents.
In Matthew 15:16, Jesus asks 'Are you also without understanding?' — a direct parallel to Isaiah's rhetorical question about who can understand doctrine.
In Mark 7:18, Jesus asks 'Are you so without understanding?' — directly mirrors Isaiah's question about who will understand.
In Hebrews 5:12, the author rebukes those needing milk instead of solid food — the same milk/meat metaphor as Isaiah's weaned from milk.
In Hebrews 5:13, those who use milk are unskilled in righteousness — continues the milk metaphor from Hebrews 5:12, directly relating to Isaiah 28:9.
Matt 11:25 reveals truth to babes — the receptive, childlike heart parallels the weaned child who is ready to learn in Isaiah.
Psalm 50:17 similarly rebukes those who hate discipline and cast God's words behind them.
Proverbs 1:29 states they hated knowledge and did not choose the fear of the Lord — the same refusal to learn.
Jeremiah 5:31 describes false prophets and people loving deception, reflecting the same rejection of true instruction.
1 Pet 2:2 urges craving spiritual milk — opposite of being weaned in Isaiah, yet both use milk as a growth stage.
Ps 34:11 invites children to learn the fear of the Lord — a direct parallel to Isaiah's question about whom to teach.
John 3:19 speaks of people loving darkness rather than light, illustrating the same unwillingness to receive truth.