"The age of the law and the prophets ended with John the Baptist; since then the Kingdom of heaven has been at work among men." (reference to Matt 11:12-13)
"Although we find in the prophets a growing emphasis upon the individual, the terms of the Old Covenant were primarily with Israel as a nation; and Gentiles could share the spiritual blessings of the Covenant only by becoming part of the nation."
"Confession of His Messiahship is at the same time confession of the presence of the Kingdom of God, for it is the mission of the Messiah to bring the Kingdom of God to men."
"His mission, as well as His Messiahship, was a 'mystery'; it was not to bring the evil Age to its end and inaugurate The Age to Come. It was rather to bring the powers of the future Age to men in the midst of the present evil Age; and this mission involved His death."
"The Church is the fellowship of disciples of Jesus who have received the life of the Kingdom and are dedicated to the task of preaching the Gospel of the Kingdom in the world."
"The Church... is not the Kingdom of God; God's Kingdom creates the Church and works in the world through the Church."
"While we must therefore speak of Israel and the Church, we must speak of only one people of God."
"We must remember that the earliest Church consisted of Jewish believers; but they came into the Church not because they were Jews but because they were the believers."
"While the Kingdom of God will not be realized as a state of perfect blessedness until Christ returns, God's Kingdom is at work in the world and is engaged in a mortal struggle with evil. The Church is the instrument of this struggle. Conflict therefore must ever be an essential element in the life of the Church so long as This Age lasts."
The Kingdom, Israel, and the Church
Quotes from The Gospel of the Kingdom by George Eldon Ladd - Chapter VIII
