from - Greek, “out of the power,” out of the sphere in which his power is exercised.
darkness - blindness, hatred, misery [Bengel].
translated - Those thus translated as to state, are also transformed as to character. Satan has an organized dominion with various orders of powers of evil (Eph 2:2; Eph 6:12). But the term “kingdom” is rarely applied to his usurped rule (Mat 12:26); it is generally restricted to the kingdom of God.
his dear Son - rather as Greek, “the Son of His love”: the Son on whom His love rests (Joh 17:26; Eph 1:6): contrasted with the “darkness” where all is hatred and hateful.