Charles H. Spurgeon on Psalms 62:3

Against a man. That sure is but a poetical expression for against me, i.e., David, the speaker, against whom the neighbouring nations raised war, and his own subjects rebellions. Thus doth Christ oft speak of himself under the title of the Son of Man, in the third person; and Paul (2Co 12:2), Oisa anyrwpon, "I knew a man, "i.e., undoubtedly himself. Henry Hammond.