Teach me to do thy will; for thou art my God: thy spirit is good; lead me into the land of uprightness. Teach me to do thy will - רצונך retsonecha, thy pleasure. To be found doing the will of God is the only safe state for man.
Thy Spirit is good - The Author of every good desire and holy purpose.
Lead me - Let it lead me by its continued inspirations and counsels.
Into the land of uprightness - "Into a right land," Chaldee. Into the place where I shall be safe. The old Psalter has, Thi goste gude sal lede me into rygt lande.