Be Not Careless in Considering His Works

"because we are either sluggish or careless in considering His works, and because they quickly pass away from our view in consequence of our giving so little attention to them, [Isaiah] repeats the same statement in many forms. We give our attention to vain and useless matters, instead of admiring these works of God; and if at any time they excite our admiration, yet we quickly forget them, because we are speedily led aside to different and very unimportant matters. The Prophet therefore arouses us, in order to shake off our slothfulness, and to quicken and direct all our senses to understand the power of God. On this account he places in the first rank looking, which produces certain knowledge, and next adds thought, which more fully and abundantly confirms the knowledge." John Calvin commentary on Isaiah 41:17-20