Matthew Poole and continuators on 1 John 3:7

7 Little children, let no man deceive you: He that doth righteousness, is righteous, even as he is righteous .

This Caution implies the zealous Endeavour of the Seducers of that Time, to instil their poysonous Doctrine and Principles of Licentiousness; and his own Solicitude, lest these Christians should receive them, and be mischiev'd by them. Whereas therefore they were wont to suggest, that a meerly notional Knowledg was enough to recommend Men, and make them acceptable to God, tho they liv'd never so impure Lives, he inculcates, That only they that did Righteousness, viz. in a continued Course, living conformably to the Rules of the Gospel, were righteous: and that they must aim to be so, even as he is righteous; not only making the Righteousness and holy Life of Christ, the Object of their Trust, but the Patern of their Walking and Practice.

Marginal references: Chap. 7.29.