John the Apostle
1 John 5:21ESV·traditional attribution

Little children, keep yourselves from idols.

John Calvin Reformed @genevareformer

21 Keep yourselves from idols Though this be a separate sentence, yet it is as it were an appendix to the preceding doctrine. For the vivifying light of the Gospel ought to scatter and dissipate, not only darkness, but also all mists, from the minds of the godly.

Matthew Henry Presbyterian @wholebiblehenry

Here we have, I. A recapitulation of the privileges and advantages of sound Christian believers. 1. They are secured against sin, against the fulness of its dominion or the fulness of its guilt: We know that whosoever is born of God (and the believer in Christ is born of God, Jo1 5:1) sinneth not (Jo1 5:18), sinneth not with that fulness of heart and spirit...

Commenting on 1 John 5:18-21

John Gill Reformed Baptist @doctorgill

Little children, keep yourselves from idols, Amen. From Heathen idols and idolatry, into which the saints in those times might be liable to be drawn, by reason of their dwelling among Heathen idolaters, and being related to them, and by the too great freedom used in eating things sacrificed to idols in their temples; and from all other idols that might be introduced by some...