Charles H. Spurgeon on Psalms 110:2

From his ruling in the midst of enemies we learn that the kingdom of Christ in this life is the kingdom of the Cross, of persecutions, and of dangers. Enemies are never wanting, not only external adversaries, but also spiritual and eternal; and therefore great sorrow is always awaiting the godly. In this most terrible conflict, however, their minds are lifted up by this consolation, viz., that the rod of the kingdom is strong, and cannot be overcome by any force or power; yea, more, albeit assailed with contendings and all kinds of storms, it will continue stable, firm, and perpetual: and there will always be a Church among men, which will fear and worship this King; because the experience of all the ages teaches, that this kingdom has the more grown and increased the more it has been opposed, according to that saying of Basil, en taiv yliqesi mallon yallei h ekklhsia, the Church flourishes more by tribulation. Rivetus.