Charles H. Spurgeon on Psalms 115:13

He will bless... both small and great. Mercy, according to the covenant of grace, giveth the same grounds of faith and hope to everyone within the church; so that whatever of favour is shown to one of God's people, it is of a general use and profit to others. This Scripture sheweth that as the duty of trusting in the Lord is common to all sorts of persons, so the blessing of trust is common, and doth belong to all sorts of believers, small and great. God's Israel consists of several degrees of men. There are magistrates who have their peculiar service; there ate ministers who intercede between God and man in things belonging to God; and there are the common sort of them that fear God, and are admitted to the honour of being his people. Now these have all the same privileges. If God be the help and shield of the one, he will be the help and shield of the other; if he bless the one he will bless the other. Every one that feareth God, and is in the number of the true Israelites, may expect his blessing as well as public persons; the meanest peasant as well as the greatest prince, as they have leave to trust in God, so they may expect his blessing. The reason is that they have all an equal interest in the same God, who is a God of goodness and power, able and willing to relieve all those that trust in him. He is alike affected to all his children, and beareth them the same love. Thomas Manton.