Psalms 34:3

O magnify the Lord with me
The psalmist invites the humble ones, who he knew would rejoice at the goodness of God to him, to join with him in ascribing greatness to the Lord, which is meant by magnifying him; for he cannot be made great by men, only declared how great he is, and that can only be done in an imperfect manner;

and let us exalt his name together:
by proclaiming him to be the most High; by making mention of his glorious perfections and works, that he be exalted; and by praising him in the highest strains; or by having the high praises of him in their mouths; and there is more pleasure as well as more glory brought to God by doing this in a social way, or by a number of saints joining together in such service.