"Biblical Word: "The Kingdom of God" // From: BIBLE DICTIONARY

(
(1.) Christ's mediatorial authority, or his rule on the earth;
(2.) the blessings and advantages of all kinds that flow from this rule;
(3.) the subjects of this kingdom taken collectively, or the Church.Mat_6:33; Mar_1:14, Mar_1:15; Luk_4:43) = "kingdom of Christ" (Mat_13:41; Mat_20:21) = "kingdom of Christ and of God" (Eph_5:5) = "kingdom of David" (Mar_11:10) = "the kingdom" (Mat_8:12; Mat_13:19) = "kingdom of heaven" (Mat_3:2; Mat_4:17; Mat_13:41), all denote the same thing under different aspects, viz.: