Commentaries:
Barnes' Notes
Which some professing - Evidently some who professed to be true Christians. They were attracted by false philosophy, and soon, as a consequence, were led to deny the doctrines of Christianity. This result has not been uncommon in the world.
Have erred concerning the faith - see notes on I Timothy 1:6-7; I Timothy 6:10.
Grace be with thee - see the notes, Romans 1:7.
On the subscription at the close of this Epistle, see Intro., Section 2. It is, like the other subscriptions at the close of the epistles, of no authority.
Other Barnes' Notes entries containing 1 Timothy 6:21:
Romans 10:9
1 Timothy 1:6
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