1. The first caution concerns his person immediately, as dwelling in us. It is given, Eph. iv. 30, “Grieve not the Holy Spirit of God.” There is a complaint, Isa. lxiii. 10, of them who vexed or grieved the Spirit of God; and from thence doth this caution seem to be taken. That it is the person of the Holy Ghost which is here intended, is evident, —