Psalms 63:7 - Joseph Benson’s Commentary on the Old and New Testaments

Because thou hast been my help When other helps and helpers failed me; because I have known by experience both thy power and will to save those that trust in thee; therefore, in the shadow of thy wings will I rejoice Hebrew, ארנן, aranneen, will I sing: I will confide in thee for the future, and will do it with delight and comfort: I will rest securely and joyfully, and will sing thy praises under thy protection. He alludes either to the wings of the cherubim stretched out over the mercy-seat, between which God was said to dwell; or to the wings of a fowl, under which her helpless young ones have shelter. Thus the recollection of past mercies inclines the true believer still to have recourse, in all his dangers and difficulties, to his strong helper, and to put himself and all his affairs under the wings of an overshadowing providence.