Found 162 times in the New Testament, the Greek noun “basileia” meant “kingdom,” “reign,” “kingship.” In some places kingdom is just another way of describing the New Testament church.
This word is first used in Mt. 3:2 (John the Baptist said the “kingdom” of heaven was at hand). Satan showed Jesus the “kingdoms” of the world (Mt. 4:8). The “kingdom” is to be sought first (Mt. 6:33). Saying “Lord, Lord” is not enough to enter the eternal kingdom (Mt. 7:21). There is the “word of the kingdom” (Mt. 13:19). Peter was given the “keys to the kingdom” (church), Mt. 16:19). Christian partake of the Lord’s Supper in the “kingdom” (church), Mt. 26:29. People in the first century saw the “kingdom” come with power (Mk. 9:1). Rich people have difficulty entering the “kingdom” (Mk. 10:23). Some are “not far from the kingdom” (Mk. 12:34). Jesus’ “kingdom” is not of this world (Jn. 18:36). Unrighteous people have no part in the “kingdom” (1 Cor. 6:9). “Flesh and blood” cannot inherit the “kingdom” (1 Cor. 15:50). In the first century people were being transferred into the “kingdom” (Col. 1:13) and serving as fellow-workers in the “kingdom” (Col. 4:11). It is possible to be counted “worthy” of the “kingdom” (2 Thess. 1:5). The “kingdom” is one of righteousness (Heb. 1:8). There is also an evil “kingdom” (Rev. 16:10).