Paul warned about angels. Doesn that condemn Joseph Smith?
I believe you have two passages in mind: Gal. 1:8 But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed. 2 Cor. 11:14 And no marvel; for Satan himself is transformed into an angel of light. Paul warns against anyone accepting any other Gospel than what Christ and the Apostles preached, regardless of its apparent source, and I agree. Now consider this: what was early Christianity? What did Christ teach? What was His Church? Christ taught faith and repentance, followed by baptism by immersion for those who believe (Acts 2:37-38; John 3:3-5; Matt. 4:17; Mark 16:16; Romans 6; many others). Anything else – infant baptism, baptism by sprinkling, etc., is not the same Gospel. Christ instituted an unpaid ministry (Matt. 10:8; 1 Cor. 9:18; John 10:11-13; Acts 20:33-35; 2 Thess. 3:7-8) comprising apostles and prophets and other offices (Bishops, Seventies, etc.) which was lead by revelation from Him (Eph. 4:11-14).