Charles H. Spurgeon on Psalms 80:17

Let thy hand be upon the man of thy right hand, etc. Neither the church, nor any member thereof needeth any more security for their stability and perpetuation, but Christ; for now when the vineyard is burnt, and the visible church defaced, the remnant are content to rest satisfied with this, which also they take for granted, and do subscribe unto it: Let thy hand be upon the man of thy right hand, upon the son of man whom thou madest strong for thyself. The consanguinity of Christ with the believer, and his humiliation in his human nature, are strong supporters of the faith and comfort of his people that do seek salvation through him; therefore do the faithful here fix themselves on this, that as he is God's Son, so he is a branch of their vineyard also; that as he is at the right hand of the Father as God, so he is the man of his right hand also; the Son of Man, or of Adam, partaker of flesh and blood with us, of the same stock that we are of, in all things like to us, except sin; for the Son of Man is the style whereby Christ styled himself in his humiliation. The perpetuity of the church, and the perseverance of the saints, is founded upon the sufficiency of Christ; and the unfeigned believer may assure himself, as of the continuance of the church, so of his own perseverance and constant communion with God through him. Let thy hand be upon the man of thy right hand, etc.; so will not we go back from thee. David Dickson.