Does God forbid in this commandment, only adultery, and such like gross sins?

Since both our body and soul are temples of the holy Ghost, he commands us to preserve them pure and holy: therefore he forbids all unchaste actions, gestures, words, (a) thoughts, desires, (b) and whatever can entice men thereto. (c)

(a) Eph.5:3 But fornication, and all uncleanness, or covetousness, let it not be once named among you, as becometh saints; Eph.5:4 Neither filthiness, nor foolish talking, nor jesting, which are not convenient: but rather giving of thanks. 1 Cor.6:18 Flee fornication. Every sin that a man doeth is without the body; but he that committeth fornication sinneth against his own body. 1 Cor.6:19 What? know ye not that your body is the temple of the Holy Ghost which is in you, which ye have of God, and ye are not your own? 1 Cor.6:20 For ye are bought with a price: therefore glorify God in your body, and in your spirit, which are God's. (b) Matt.5:27 Ye have heard that it was said by them of old time, Thou shalt not commit adultery: Matt.5:28 But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart. (c) Eph.5:18 And be not drunk with wine, wherein is excess; but be filled with the Spirit; 1 Cor.15:33 Be not deceived: evil communications corrupt good manners.