The unity of Father, Son, and Holy Spirit as three persons in one Godhead.
Father = Heavenly Father.
Son = Jesus Christ.
Holy Spirit = Holy Spirit. :)
Used to express hearty approval. It's more often than not seen within a Church, mainstream Christianity, etc.
Man 1: "I think what we need in this country is more healthcare!"
Man 2: "Amen to that!"
Man 1: Jesus is Lord!
Man 2: Amen!
Used to express joy, praise and thanks.
Man 1: Hey man, I just got a raise at work!
Man 2: Hallelujah dude!
The first book of the Old Testament; -- so called by the Greek translators, from its containing the history of the creation of the world and of the human race. (Judeo-Christian Religion)
Genesis 1:1 -- "In the beginning God created the heavens and the earth."
To be born out of the physical nature and into a spiritual nature.
John 3:3 - Jesus answered and said unto him, "Verily, verily, I say unto thee, Except a man be born again, he cannot see the kingdom of God."