Psalms 115:9

9O Israel! trust thou in Jehovah The prophet again resumes the doctrinal point, that the genuine worshippers of God have no cause to fear that he will forsake or frustrate them in the time of need; because he is as much disposed to provide for their safety as he is furnished with power to do it. He proceeds, in the first place, to exhort all the Israelites generally to place their confidence in God; and, secondly, he addresses the house of Aaron in particular; and, thirdly, he sets down all who fear God. For this arrangement there was good cause. God had adopted indiscriminately all the people, to whom also his grace was offered, so that they were bound in common to place their hope in him. In accordance with this Paul says, that the twelve tribes of Israel wait for the promised deliverance, (Acts 26:7) The prophet, therefore, with great propriety first addresses Israel at large. But having in a peculiar manner set apart the Levites for himself, and more especially the priests of the house of Aaron, to take the precedence, and to preside over ecclesiastical matters, he demands more from them than from the common people; not that salvation was promised specially to them, but because it was proper that they who had the exclusive privilege of entering the sanctuary should point out the way to others. As if the prophet had said, Ye sons of Aaron, whom God hath chosen to be the teachers of religion to his people, be ye to others an example of faith, seeing that he hath so highly honored you in permitting you to enter his sanctuary.