John Trapp on Amos 7:3

Verſe 3. The Lord repented for this: it ſhall not be, ſaith the Lord.] Here was mutatio rei, non Dei: facti, non conſilij: a change not of Gods will, but of his work; therefore (by way of explication) it followeth, it ſhall not bee ſaith the Lord. To ſpeak properly, there can be no repentance in God, 1 Sam. 15.20. but this is ſpoken after the manner of men: and it notably ſetteth forth the power of faithfull prayer, able after a ſort, to alter Gods minde, and to transfuſe a dead Palſie into the hands of Omnipotencie, Exod. 32.10. where God is fain to be-ſpeak his own freedom: and Moſes is repreſented as the great Chancellour of heaven.