3. How he sets forth the greatness and power of God as a reason why we should prepare to meet him, v. 13. If he be such a God as he is here described to be, it is folly to contend with him, and our duty and interest to make our peace with him; it is good having him our friend and bad having him our enemy. (1.) He formed the mountains, made the earth, the strongest stateliest parts of it, and by the word of his power still upholds it and them. Whatever are the products of the everlasting mountains, he formed them; whatever salvation is hoped for from hills and mountains, he is the founder of it, Ps. lxxxix. 11, 12. He that formed the great mountains can make them plain, when they stand in the way of his people's salvation. (2.) He creates the wind. The power of the air is derived from him, and directed by him; he brings the wind out of his treasures, and orders from what point of the compass it shall blow; and he that made it rules it; even the winds and the seas obey him. (3.) He declares unto man what is his thought. He makes known his counsel by his servants the prophets to the children of men, the thought of his justice against impenitent sinners, and the thought of good he thinks towards those that repent. He can also make known, for he perfectly knows, the thought that is in man's heart; he understands it afar off, and in the day of conviction will set the evil thoughts among the other sins of sinners in order before them. (4.) He often makes the morning darkness, by thick clouds overspreading the sky immediately after the sun rose bright and glorious; so when we look for prosperity and joy he can dash our expectations with some unlooked-for calamity. (5.) He treads upon the high places of the earth, is not only higher than the highest, but has dominion over all, tramples upon proud men, and upon the idols that were worshipped in the highest places. (6.) Jehovah the God of hosts is his name, for he has his being of himself, and is the fountain of all being, and all the hosts of heaven and earth are at his command. Let us humble ourselves before this God, prepare to meet him, and give all diligence to make him our God, for happy are the people whose God he is, who have all this power engaged for them.