The Apostle Peter
1 Peter 1:11ESV·traditional attribution

inquiring what person or time the Spirit of Christ in them was indicating when he predicted the sufferings of Christ and the subsequent glories.

John Calvin Reformed @genevareformer

11. And what they inquired is pointed out when he adds, Searching what, or what manner of time There was a difference between the law and the gospel, a veil as it were being interposed, that they might not see those things nearer which are now set before our eyes.

Matthew Henry Presbyterian @wholebiblehenry

The apostle having described the persons to whom he wrote, and declared to them the excellent advantages they were under, goes on to show them what warrant he had for what he had delivered; and because they were Jews, and had a profound veneration for the Old Testament, he produces the authority of the prophets to convince them that the doctrine of salvation by faith...

Commenting on 1 Peter 1:10-12

John Gill Reformed Baptist @doctorgill

Searching what, or what manner of time,.... The prophets made a very diligent inquiry into the exact time when Christ should come to work out the salvation of his people; to whom it was made known that his coming should be before the sceptre, or tribe of Judah, and all civil government in it, ceased; and before the second temple was destroyed, into which the...