Matthew
Matthew 28:17ESV·traditional attribution

And when they saw him they worshiped him, but some doubted.

John Calvin Reformed @genevareformer

17. But some doubted. It is wonderful that, after they had twice seen Christ, still some doubted. If any one choose to view this as referring to the first appearance, there will be no absurdity in that opinion; for the Evangelists are sometimes in the habit of blending a variety of transactions.

John Gill Reformed Baptist @doctorgill

And when, they saw him, they worshipped him,.... With divine adoration, as the eternal Son of God; for so he was now declared to be by his resurrection from the dead, Rom 1:4, but some doubted; or "some of them", as the Syriac and Arabic versions render it; that is, some of the eleven disciples: not that they doubted now that Christ was risen from...

Albert Barnes Presbyterian @notesbybarnes

Verse 17. They worshipped him. Paid him honour as the Messiah. But some doubted. As, for example, Thomas, (.) The disciples had not expected his resurrection; they were therefore slow to believe. The mention of their doubting shows that they were honest men--that they were not easily imposed on--that they had not previously agreed to affirm that he had risen--that they were convinced only by the strength of the evidence.