The Apostle Paul warned the young disciple Timothy to stay diligent to study and understand the Word of God and not to be deluded by the heresies in the day he lived.
O Timothy, keep that which is committed to thy trust, avoiding profane and vain babblings, and oppositions of science falsely so called: Which some professing have erred concerning the faith. Grace be with thee. Amen. 1 Timothy 6:20,21
The word translated ‘science’ here is γνῶσις gnosis in the Greek text. It means knowing or knowledge. The warning is against that false knowledge—gnosticism. Gnosticism was the predominant source of heresy when the New Testament was written.