ISB ~ 1 Timothy 4 v3

forbid marriage:Timothy is put on guard against teachers who deny the goodness of marriage. Even Paul, who actively promotes celibacy (1 Cor 7:25-26), firmly upholds the propriety and sanctity of married life (Eph 5:21-33). See note on 1 Cor 7:1.

abstinence from foods:Possibly a reference to the dietary restrictions of the Old Covenant (Lev 11). The warning is issued because these laws are no longer binding upon believers in the New Covenant (Mk 7:18-19; Acts 10:9-16). Some suggest this twofold ban on marriage and certain foods reflects an incipient form of Gnosticism, a second-century heresy that saw the material world as evil and called adherents to rise above the demands of their physical life as far as possible. Timothy is cautioned, not against asceticism itself, but against deviant forms of it that develop when the goodness of creation is denied (4:4; Gen 1:31).