And men shall speak of the might of thy terrible acts - The force, the power of those things done by you which are suited to inspir…

Your greatness. —Or, according to the written text, greatnesses. So Aquila and Jerome. The parallelism is decidedly in fa…

And of thy wondrous works. And men shall speak of the might of thy terrible acts: and I will declare thy greatness.

And I will …

And [men] shall speak of the might of thy terrible acts
The terrible things of Christ, which his right hand has taug…

Those who, under troubles and temptations, abound in fervent prayer, will at the proper time abound in grateful praise, which is the true language …