KJV:
From which some having swerved have turned aside unto vain jangling;
NASB:
For some men, straying from these things, have turned aside to fruitless discussion,
KJV:
For some are already turned aside after Satan.
NASB:
for some have already turned aside to follow Satan.
KJV:
O Timothy, keep that which is committed to thy trust, avoiding profane and vain babblings, and oppositions of science falsely so called:
NASB:
O Timothy, guard what has been entrusted to you, avoiding worldly and empty chatter and the opposing arguments of what is falsely called "knowledge "--