The Kingdom of God was the central theme of Jesus’ teaching while on earth. After His resurrection and ascension, He personally spent 40 days on earth training His disciples. The focus of His teaching was the Kingdom. Acts 1:3
As I grow in Christ, my knowledge of the Kingdom has grown, but this statement from the Baptist Faith and Message shows the commonality among Baptists and a starting encapsulization of my personal convictions.
IX. The Kingdom
The Kingdom of God includes both His general sovereignty over the universe and His particular kingship over men who willfully acknowledge Him as King. Particularly the Kingdom is the realm of salvation into which men enter by trustful, childlike commitment to Jesus Christ. Christians ought to pray and to labor that the Kingdom may come and God’s will be done on earth. The full consummation of the Kingdom awaits the return of Jesus Christ and the end of this age.
Genesis 1:1; Isaiah 9:6-7; Jeremiah 23:5-6; Matthew 3:2;4:8-10,23; 12:25-28; 13:1-52; 25:31-46; 26:29; Mark 1:14-15; 9:1; Luke 4:43; 8:1; 9:2; 12:31-32; 17:20-21; 23:42;John 3:3; 18:36; Acts 1:6-7; 17:22-31; Romans 5:17; 8:19; 1 Corinthians 15:24-28; Colossians 1:13; Hebrews 11:10,16;12:28; 1 Peter 2:4-10; 4:13; Revelation 1:6,9; 5:10; 11:15;21-22.