Albert Barnes Commentary Matthew 9:4

"And Jesus knowing their thoughts said, Wherefore think ye evil in your hearts?" — Matthew 9:4 (ASV)

Jesus knowing their thoughts. Mark says, Jesus perceived in his spirit that they so reasoned. The power of searching the hearts, and knowing the thoughts of people, belongs only to God (1 Chronicles 28:9; Romans 8:27; Revelation 2:23; Jeremiah 17:10).

In claiming this, as Jesus did here, and often elsewhere, he gave clear proofs of his omniscience (John 2:24–25).