1:35 (A) How can Jesus be both Son of God and Son of Man?

The terms Son of God and Son of Man are interchangeable.

They both refer to Jesus. Son of God expresses His Deity (cp Mt 1:18-25; 3:13-17; 16:13-16; 17:1-9; Php 2:5-11).

Son of Man expresses Jesus' humanity and servanthood (cp Psa 2:7; Mt 12:15-21; 20:28; Lk 2:11; Jn 1:14).