“sacred secrets”. We translate the Greek word mustērion (#3466 μυστήριον) as “sacred secret” because that is what mustērion actually refers to: a secret in the religious or sacred realm. [For more information on the “Sacred Secret” and the Administration of Grace, see commentary on Ephesians 3:9].

“the Kingdom of Heaven.” The “kingdom of heaven” is the coming kingdom of Christ on earth. [For more information on the coming kingdom of Christ, see Appendix 3, “Christ’s Future Kingdom on Earth”].