Mark 8:21 concludes with 'Do you not yet understand?'—the immediate follow-up to the rebuke in verse 17.

Mark 16:14 records Jesus rebuking the disciples' hardness of heart after his resurrection — same theme of spiritual dullness as here.

Mark 6:52 notes the disciples' hardened hearts after the first feeding — paralleling their continued dullness here after the second feeding.

Mark 3:5 also mentions 'hardness of heart' — the same phrase Jesus uses here to describe the disciples' dullness.

Mark 2:8 shows Jesus immediately knowing the scribes' thoughts—a parallel demonstration of his divine perception.

Mark 9:32 shows the disciples again failing to understand—reinforcing the pattern of spiritual dullness Jesus addresses.

In Matthew 16:9, the same question about forgetting the loaves — directly parallel account of the same rebuke.

Psalm 106:7 describes Israel forgetting God's wonders — parallels disciples forgetting the miracle of loaves.

Acts 28:26 quotes Isaiah 6:9, showing Paul applying the same 'hearing but not understanding' judgment as Jesus does here.

John 12:40 quotes Isaiah about hardened hearts—directly explains the condition Jesus accuses the disciples of in Mark.

Matthew 16:10 recalls the feeding miracles that Jesus expects the disciples to have learned from—same context as Mark 8:17.

Matthew 15:16 has Jesus asking 'still without understanding?'—the same rebuke pattern as Mark's 'do you not perceive?'

In Matthew 13:51, the disciples claim understanding—contrasting starkly with their failure to understand in Mark 8:17.

Matthew 13:13 describes seeing but not perceiving—directly parallels the spiritual dullness and hardened hearts Jesus rebukes in Mark.

Ezekiel 12:2 describes eyes but not seeing — directly parallels Jesus' rebuke of disciples' lack of perception.

Isaiah 42:19 speaks of spiritual blindness — parallels the hardened hearts Jesus rebukes.

Luke 5:22 has Jesus perceiving thoughts and questioning hearts—similar divine insight and rebuke as in Mark 8:17.

Luke 24:25 rebukes slowness to believe — similar spiritual dullness but different context.

John 2:25 adds that Jesus needed no testimony about mankind—reinforcing his ability to know what was in their hearts, as seen here.

Job 33:14 notes God speaks but people do not perceive — similar to Jesus' frustration with lack of perception.

Hebrews 5:11 mentions becoming dull of hearing — echoes the hardened hearts here.