22. He who knows what in the Lord is signified by the Son of God, and what in Him by the Son of Man, is able to see many arcana of the Word: for the Lord sometimes calls Himself the Son, sometimes the Son of God, and sometimes the Son of Man, always according to the subject treated of. When His Divinity, His oneness with the Father, His Divine power, faith in Him and life from Him, are treated of, He then calls Himself the Son, and the Son of God, as in John v 17-26; and elsewhere. Where, however, His passion, the Judgment, His Coming, and, in general, redemption, salvation, reformation and regeneration are treated of, He then calls Himself the Son of Man, because He is then understood in relation to the Word.
The Lord is designated by various names in the Word of the Old Testament. He is there named Jehovah, Jah, the Lord, God, the Lord Jehovih, Jehovah Zebaoth, the God of Israel, the Holy One of Israel, the Mighty One of Jacob, Shaddai, the Rock; also the Creator, the Former, the Saviour and the Redeemer; everywhere according to the subject treated of. The case is similar in the Word of the New Testament, where He is named Jesus, Christ, the Lord, God, the Son of God, the Son of Man, the Prophet, the Lamb, and also other names: yet always according to the subject treated of.