Matthew 9:12
But when Jesus heard that, he said unto them, They that be whole need not a physician, but they that are sick.
Cross-reference
Mark 2:17 is the parallel account, adding 'I came not to call the righteous, but sinners' — reinforcing the physician metaphor.
Luke 5:31 is the parallel account of the same saying, directly quoting Jesus' physician metaphor.
In Isaiah 1:6, Israel is covered in wounds — a vivid diagnosis of spiritual sickness that only God can heal.
In Luke 7:39, a Pharisee criticizes Jesus for allowing a sinful woman to touch Him — a direct example of the 'sick' Jesus came to heal in the 'doctor' saying.
Luke 19:10 states Jesus' mission to seek and save the lost, explaining why He calls sinners — the very point of His 'doctor for the sick' metaphor.
In Jeremiah 8:22, the people lament no physician for their wounds — Jesus fulfills that need as the divine Healer.
In 1 Samuel 22:2, David gathers the distressed and indebted — a type of Christ who calls the spiritually sick.
In 2 Chronicles 16:12, Asa relies on human physicians instead of the Lord — contrasting with Jesus as the divine Healer.